{"id":902,"date":"2026-08-02T15:12:47","date_gmt":"2026-08-02T15:12:47","guid":{"rendered":"https:\/\/lumexislaser.com\/?page_id=902"},"modified":"2026-08-05T10:47:26","modified_gmt":"2026-08-05T10:47:26","slug":"ranging-laser-sources","status":"publish","type":"page","link":"https:\/\/lumexislaser.com\/de\/solutions\/ranging-laser-sources\/","title":{"rendered":"1535 nm Er:Glass Laser Sources for Precision Ranging Systems"},"content":{"rendered":"<style>\nbody.page-id-902{overflow-x:clip}\nbody.page-id-902 .page-header,body.page-id-902 h1.entry-title{display:none!important}\nbody.page-id-902 .lumexis-solution-hero>.wp-block-columns{width:100%!important;max-width:1140px!important;margin-left:auto!important;margin-right:auto!important;align-items:stretch}\nbody.page-id-902 .lumexis-solution-hero .wp-block-column:last-child{display:flex}\nbody.page-id-902 .lumexis-solution-hero .wp-block-column:last-child figure{display:grid;grid-template-rows:minmax(0,1fr) auto;width:100%;height:100%;margin:0}\nbody.page-id-902 .lumexis-solution-hero .wp-block-column:last-child img{width:100%;height:100%;min-height:0;object-fit:cover}\nbody.page-id-902 .lumexis-visual-card{width:100%!important;max-width:1140px!important;margin-left:auto!important;margin-right:auto!important;overflow:hidden;box-shadow:0 14px 34px rgba(17,24,39,.06)}\nbody.page-id-902 .lumexis-visual-card .wp-block-image,body.page-id-902 .lumexis-visual-card figure{margin:0;height:100%}\nbody.page-id-902 .lumexis-visual-card img{width:100%;height:100%;min-height:300px;object-fit:cover}\nbody.page-id-902 .lumexis-solution-table{overflow-x:auto}\nbody.page-id-902 .lumexis-solution-table table{min-width:760px}\n@media(max-width:781px){body.page-id-902 .lumexis-solution-hero .wp-block-column:last-child figure{display:block;height:auto}body.page-id-902 .lumexis-solution-hero .wp-block-column:last-child img,body.page-id-902 .lumexis-visual-card img{height:auto;min-height:0}}\n<\/style>\n\n<div class=\"wp-block-group alignfull lumexis-solution-hero has-background is-layout-constrained wp-container-core-group-is-layout-c12f9e37 wp-block-group-is-layout-constrained\" style=\"background-color:#0b0b0d;margin-top:0;margin-bottom:0;padding-top:72px;padding-right:24px;padding-bottom:72px;padding-left:24px\">\n<div class=\"wp-block-columns alignwide is-layout-flex wp-container-core-columns-is-layout-bf561b98 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:55%\">\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#c9a24b;margin-bottom:18px;font-size:12px;font-weight:700;letter-spacing:0.12em;text-transform:uppercase\">Ranging laser sources<\/p>\n\n<h1 class=\"wp-block-heading has-text-color\" style=\"color:#ffffff;margin-bottom:24px;font-size:clamp(28px,3vw,40px);font-weight:600;line-height:1.12\">Ranging Laser Sources: Build Around the Range Budget<\/h1>\n\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#d5d5d2;margin-bottom:28px;font-size:15px;line-height:1.7\">Lumexis develops compact 1535 nm <a href=\"https:\/\/lumexislaser.com\/de\/erbium-glass-lasers\/\">Er:glass laser sources<\/a> for pulsed Time-of-Flight ranging, with source configurations selected around the target, working distance, optics, timing, receiver, and OEM integration limits.<\/p>\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-font-size\" style=\"font-size:13px;font-weight:700\"><a class=\"wp-block-button__link has-text-color has-background wp-element-button\" href=\"https:\/\/lumexislaser.com\/de\/contact\/\" style=\"border-radius:2px;color:#0b0b0d;background-color:#c9a24b\">Discuss your application with Lumexis<\/a><\/div>\n<\/div><\/div>\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:45%\">\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"900\" height=\"600\" src=\"https:\/\/lumexislaser.com\/wp-content\/uploads\/2026\/08\/1535nm-ranging-laser-source-hero.webp\" alt=\"Kompakte Lumexis-1535-nm-Er:Glas-Laserquelle mit einem konzeptionellen optischen Pfad f\u00fcr die Laufzeit-Entfernungsmessung\" class=\"wp-image-901\" srcset=\"https:\/\/lumexislaser.com\/wp-content\/uploads\/2026\/08\/1535nm-ranging-laser-source-hero.webp 900w, https:\/\/lumexislaser.com\/wp-content\/uploads\/2026\/08\/1535nm-ranging-laser-source-hero-300x200.webp 300w, https:\/\/lumexislaser.com\/wp-content\/uploads\/2026\/08\/1535nm-ranging-laser-source-hero-768x512.webp 768w, https:\/\/lumexislaser.com\/wp-content\/uploads\/2026\/08\/1535nm-ranging-laser-source-hero-600x400.webp 600w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/><\/figure>\n<\/div><\/div><\/div>\n<div class=\"wp-block-group alignfull has-background is-layout-constrained wp-container-core-group-is-layout-c12f9e37 wp-block-group-is-layout-constrained\" style=\"background-color:#ffffff;margin-top:0;margin-bottom:0;padding-top:72px;padding-right:24px;padding-bottom:72px;padding-left:24px\">\n<p class=\"wp-block-paragraph\">Build the transmitter around the required range budget\u2014not pulse energy alone.<\/p>\n\n<p class=\"wp-block-paragraph\">Lumexis develops and manufactures compact 1535 nm Er:glass laser sources for pulsed Time-of-Flight (ToF) ranging. The portfolio spans <strong>40 to 500 \u00b5J<\/strong>, <strong>3\u20136 ns<\/strong> pulse width, and configurations from <strong>1\u201310 Hz<\/strong> up to <strong>1000 Hz<\/strong>, giving instrument teams a practical starting point for compact ranging, camera-assisted measurement, field instruments, scientific measurement, and OEM optical subsystems.<\/p>\n\n<p class=\"wp-block-paragraph\">A <strong>1535 nm laser source for laser ranging<\/strong> should be selected as one part of the transmitter-to-receiver link. This page therefore begins with application fit and exact source parameters, then connects those values to optics, timing, detection, and integration decisions.<\/p>\n\n<p class=\"wp-block-paragraph\">To match a source quickly, send us six inputs:<\/p>\n\n<ol class=\"wp-block-list\">\n<li>target material, size, angle, and expected reflectivity;<\/li>\n<li>normal and maximum working distance;<\/li>\n<li>required measurement or update rate;<\/li>\n<li>transmit-aperture and final beam-divergence limits;<\/li>\n<li>source envelope, mass, voltage, and temperature limits;<\/li>\n<li>receiver aperture, detector type, and timing architecture.<\/li>\n<\/ol>\n\n<p class=\"wp-block-paragraph\"><strong>Fastest route:<\/strong> <a href=\"#request-a-source-recommendation\">Send your range budget and integration limits for a source recommendation<\/a>.<\/p>\n<\/div>\n\n<div class=\"wp-block-group alignfull has-background is-layout-constrained wp-container-core-group-is-layout-c12f9e37 wp-block-group-is-layout-constrained\" style=\"background-color:#f5f5f3;margin-top:0;margin-bottom:0;padding-top:72px;padding-right:24px;padding-bottom:72px;padding-left:24px\">\n<h2 class=\"wp-block-heading\" style=\"margin-top:0;margin-bottom:32px;font-size:clamp(30px,4vw,44px);font-weight:700;line-height:1.08\">Start with the ranging application<\/h2>\n\n<div class=\"wp-block-group alignwide lumexis-visual-card has-border-color has-background is-layout-constrained wp-block-group-is-layout-constrained\" style=\"border-color:#dedede;border-width:1px;border-radius:2px;background-color:#ffffff;margin-top:34px;margin-bottom:34px\">\n<div class=\"wp-block-columns are-vertically-aligned-stretch is-layout-flex wp-container-core-columns-is-layout-946c1612 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-stretch is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:58%\">\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/lumexislaser.com\/wp-content\/uploads\/2026\/08\/1535nm-ranging-applications.webp\" alt=\"Four applications for 1535 nm ranging laser sources: compact ranging, camera-assisted measurement, field instruments, and scientific time-of-flight systems.\"\/><\/figure>\n<\/div>\n\n<div class=\"wp-block-column is-vertically-aligned-stretch is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:42%\">\n<div class=\"wp-block-group is-layout-constrained wp-container-core-group-is-layout-b2c065c3 wp-block-group-is-layout-constrained\" style=\"padding-top:clamp(28px,4vw,48px);padding-right:clamp(24px,4vw,48px);padding-bottom:clamp(28px,4vw,48px);padding-left:clamp(24px,4vw,48px)\">\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#a17d2f;margin-bottom:12px;font-size:11px;font-weight:700;letter-spacing:0.12em;text-transform:uppercase\">Application fit<\/p>\n\n<h3 class=\"wp-block-heading\" style=\"margin-top:0;margin-bottom:14px;font-size:clamp(22px,2.4vw,30px);font-weight:650;line-height:1.2\">Match the optical source to the real measurement task<\/h3>\n\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#4c5157;margin-bottom:0;font-size:14px;line-height:1.7\">Four applications for 1535 nm ranging laser sources: compact ranging, camera-assisted measurement, field instruments, and scientific time-of-flight systems.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n<figure class=\"wp-block-table alignwide is-style-stripes lumexis-solution-table\"><table>\n<thead>\n<tr>\n<th>Application<\/th>\n<th>What the 1535 nm source contributes<\/th>\n<th>What the finished system must add<\/th>\n<th>Start the RFQ with<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Compact optical rangefinders<\/td>\n<td>A short optical pulse for direct ToF measurement<\/td>\n<td>source driver, transmit optics, receiver, timing electronics, enclosure, interface<\/td>\n<td>distance envelope, target, aperture, rate, package<\/td>\n<\/tr>\n<tr>\n<td>Camera-assisted civil measurement<\/td>\n<td>A range channel along a calibrated line of sight<\/td>\n<td>camera-to-laser alignment, target selection, pose or pointing data, host processing<\/td>\n<td>camera field of view, boresight, target size, latency<\/td>\n<\/tr>\n<tr>\n<td>Handheld and field instruments<\/td>\n<td>Compact pulsed emission for surveying, asset inspection, and scientific field measurements<\/td>\n<td>user interface, power management, aiming method, receiver, calibration<\/td>\n<td>update rate, operating temperature, battery budget, closest distance<\/td>\n<\/tr>\n<tr>\n<td>Scientific ToF instruments<\/td>\n<td>A controlled nanosecond pulse for timing experiments and remote measurements<\/td>\n<td>trigger definition, emission reference, detector chain, data acquisition, uncertainty analysis<\/td>\n<td>timing reference, repetition rate, detector bandwidth, logging<\/td>\n<\/tr>\n<tr>\n<td>OEM-optische Subsysteme<\/td>\n<td>A source building block that can be packaged around project-specific optics and electronics<\/td>\n<td>mechanical datum, thermal path, electrical drive, optical isolation, qualification<\/td>\n<td>volume envelope, mounting, voltage, lifetime profile, test plan<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/figure>\n\n<h3 class=\"wp-block-heading\" style=\"margin-top:34px;margin-bottom:16px;font-size:clamp(21px,2.4vw,28px);font-weight:650;line-height:1.25\">What this product is\u2014and what it is not<\/h3>\n\n<p class=\"wp-block-paragraph\">The Er:glass laser source is the <strong>emitter inside a ranging transmitter<\/strong>. It creates the optical pulse, but it does not by itself calculate distance or provide a complete ranging channel.<\/p>\n\n<p class=\"wp-block-paragraph\">A working rangefinder also requires:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>a compatible pump and drive circuit;<\/li>\n<li>trigger control and a defined emission-time reference;<\/li>\n<li>collimation or beam-expansion optics;<\/li>\n<li>a target path and suitable external window;<\/li>\n<li>receive optics and spectral filtering;<\/li>\n<li>an InGaAs detector and low-noise receiver chain;<\/li>\n<li>timing, detection, validation, and host-interface electronics.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">This distinction matters in procurement. A source data sheet should be compared with other sources. A complete rangefinder should be compared by target-conditioned range, minimum range, accuracy, valid-measurement behavior, interface, package, and environmental performance.<\/p>\n<\/div>\n\n<div class=\"wp-block-group alignfull has-background is-layout-constrained wp-container-core-group-is-layout-c12f9e37 wp-block-group-is-layout-constrained\" style=\"background-color:#ffffff;margin-top:0;margin-bottom:0;padding-top:72px;padding-right:24px;padding-bottom:72px;padding-left:24px\">\n<h2 class=\"wp-block-heading\" style=\"margin-top:0;margin-bottom:32px;font-size:clamp(30px,4vw,44px);font-weight:700;line-height:1.08\">Match the Lumexis source platform<\/h2>\n\n<p class=\"wp-block-paragraph\">The table below is an initial selection guide. Values are nominal product-platform specifications; confirm the order-specific drawing, operating conditions, and acceptance criteria before mechanical or electrical release.<\/p>\n\n<figure class=\"wp-block-table alignwide is-style-stripes lumexis-solution-table\"><table>\n<thead>\n<tr>\n<th>Modell<\/th>\n<th style=\"text-align: right;\">Wellenl\u00e4nge<\/th>\n<th style=\"text-align: right;\">Pulsenergie<\/th>\n<th style=\"text-align: right;\">Repetition rate<\/th>\n<th style=\"text-align: right;\">Pulsbreite<\/th>\n<th style=\"text-align: right;\">Source divergence<\/th>\n<th style=\"text-align: right;\">Versorgungsspannung<\/th>\n<th style=\"text-align: right;\">Betriebstemperatur<\/th>\n<th style=\"text-align: right;\">Mass<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>1535-LXER040<\/td>\n<td style=\"text-align: right;\">1535 nm<\/td>\n<td style=\"text-align: right;\">40 \u00b5J<\/td>\n<td style=\"text-align: right;\">1000 Hz<\/td>\n<td style=\"text-align: right;\">3\u20136 ns<\/td>\n<td style=\"text-align: right;\">\u226415 mrad<\/td>\n<td style=\"text-align: right;\">&lt;2 V<\/td>\n<td style=\"text-align: right;\">\u221240 to +65 \u00b0C<\/td>\n<td style=\"text-align: right;\">Confirm by configuration<\/td>\n<\/tr>\n<tr>\n<td>1535-LXER100<\/td>\n<td style=\"text-align: right;\">1535 nm<\/td>\n<td style=\"text-align: right;\">100 \u00b5J<\/td>\n<td style=\"text-align: right;\">1\u201310 Hz<\/td>\n<td style=\"text-align: right;\">3\u20136 ns<\/td>\n<td style=\"text-align: right;\">\u226410 mrad<\/td>\n<td style=\"text-align: right;\">&lt;2 V<\/td>\n<td style=\"text-align: right;\">\u221240 to +65 \u00b0C<\/td>\n<td style=\"text-align: right;\">9 g<\/td>\n<\/tr>\n<tr>\n<td>1535-LXER200<\/td>\n<td style=\"text-align: right;\">1535 nm<\/td>\n<td style=\"text-align: right;\">200 \u00b5J<\/td>\n<td style=\"text-align: right;\">1\u201310 Hz<\/td>\n<td style=\"text-align: right;\">3\u20136 ns<\/td>\n<td style=\"text-align: right;\">\u226410 mrad<\/td>\n<td style=\"text-align: right;\">&lt;2 V<\/td>\n<td style=\"text-align: right;\">\u221240 to +65 \u00b0C<\/td>\n<td style=\"text-align: right;\">9 g<\/td>\n<\/tr>\n<tr>\n<td>1535-LXER300<\/td>\n<td style=\"text-align: right;\">1535 nm<\/td>\n<td style=\"text-align: right;\">300 \u00b5J<\/td>\n<td style=\"text-align: right;\">1\u201310 Hz<\/td>\n<td style=\"text-align: right;\">3\u20136 ns<\/td>\n<td style=\"text-align: right;\">\u226410 mrad<\/td>\n<td style=\"text-align: right;\">&lt;2 V<\/td>\n<td style=\"text-align: right;\">\u221240 to +65 \u00b0C<\/td>\n<td style=\"text-align: right;\">9 g<\/td>\n<\/tr>\n<tr>\n<td>1535-LXER400<\/td>\n<td style=\"text-align: right;\">1535 nm<\/td>\n<td style=\"text-align: right;\">400 \u00b5J<\/td>\n<td style=\"text-align: right;\">1\u201310 Hz<\/td>\n<td style=\"text-align: right;\">3\u20136 ns<\/td>\n<td style=\"text-align: right;\">\u226415 mrad<\/td>\n<td style=\"text-align: right;\">&lt;2 V<\/td>\n<td style=\"text-align: right;\">\u221240 to +65 \u00b0C<\/td>\n<td style=\"text-align: right;\">11 g<\/td>\n<\/tr>\n<tr>\n<td>1535-LXER500<\/td>\n<td style=\"text-align: right;\">1535 nm<\/td>\n<td style=\"text-align: right;\">500 \u00b5J<\/td>\n<td style=\"text-align: right;\">1\u201310 Hz<\/td>\n<td style=\"text-align: right;\">3\u20136 ns<\/td>\n<td style=\"text-align: right;\">\u226415 mrad<\/td>\n<td style=\"text-align: right;\">&lt;2 V<\/td>\n<td style=\"text-align: right;\">\u221240 to +65 \u00b0C<\/td>\n<td style=\"text-align: right;\">13 g<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/figure>\n\n<h3 class=\"wp-block-heading\" style=\"margin-top:34px;margin-bottom:16px;font-size:clamp(21px,2.4vw,28px);font-weight:650;line-height:1.25\">Practical selection logic<\/h3>\n\n<p class=\"wp-block-paragraph\"><strong>Start with 1535-LXER040<\/strong> when the application values a high source repetition rate and the system can close its range budget with 40 \u00b5J pulses. At 1000 Hz, this platform is suited to higher-rate sampling architectures, scanning experiments, or systems that need more frequent opportunities to acquire a return.<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>Start with 1535-LXER100, 200, or 300<\/strong> when the instrument needs more energy per pulse at a low measurement rate. These three options share a 1\u201310 Hz rate class, 3\u20136 ns pulse width, \u226410 mrad source divergence, and a listed mass of 9 g, making pulse energy the first differentiator within this group.<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>Consider 1535-LXER400 or 500<\/strong> when the link budget needs a higher transmitted-energy class and the package can accept the corresponding 11 g or 13 g source. Higher energy can add return margin, but it does not guarantee a specific distance. Transmit optics, target fill, atmosphere, receiver aperture, detector performance, background, and detection logic remain part of the result.<\/p>\n\n<h3 class=\"wp-block-heading\" style=\"margin-top:34px;margin-bottom:16px;font-size:clamp(21px,2.4vw,28px);font-weight:650;line-height:1.25\">Do not select by pulse energy alone<\/h3>\n\n<p class=\"wp-block-paragraph\">Two sources can have very different intended operating points even when both are suitable for ranging. The 40 \u00b5J platform provides a much higher pulse rate; the 500 \u00b5J platform provides more energy in each pulse but at a lower repetition rate. Those choices affect sample opportunity, peak signal, average optical power, driver behavior, thermal design, detector recovery, and system-level validation.<\/p>\n\n<div class=\"wp-block-group alignwide lumexis-visual-card has-border-color has-background is-layout-constrained wp-block-group-is-layout-constrained\" style=\"border-color:#dedede;border-width:1px;border-radius:2px;background-color:#ffffff;margin-top:34px;margin-bottom:34px\">\n<div class=\"wp-block-columns are-vertically-aligned-stretch is-layout-flex wp-container-core-columns-is-layout-946c1612 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-stretch is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:58%\">\n<div class=\"wp-block-group is-layout-constrained wp-container-core-group-is-layout-b2c065c3 wp-block-group-is-layout-constrained\" style=\"padding-top:clamp(28px,4vw,48px);padding-right:clamp(24px,4vw,48px);padding-bottom:clamp(28px,4vw,48px);padding-left:clamp(24px,4vw,48px)\">\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#a17d2f;margin-bottom:12px;font-size:11px;font-weight:700;letter-spacing:0.12em;text-transform:uppercase\">Parameter interaction<\/p>\n\n<h3 class=\"wp-block-heading\" style=\"margin-top:0;margin-bottom:14px;font-size:clamp(22px,2.4vw,30px);font-weight:650;line-height:1.2\">Evaluate coupled parameters at the operating point<\/h3>\n\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#4c5157;margin-bottom:0;font-size:14px;line-height:1.7\">Comparison of a 40 \u00b5J, 1000 Hz source and a 500 \u00b5J, 10 Hz source, illustrating repetition-rate and pulse-energy tradeoffs.<\/p>\n<\/div>\n<\/div>\n\n<div class=\"wp-block-column is-vertically-aligned-stretch is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:42%\">\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/lumexislaser.com\/wp-content\/uploads\/2026\/08\/pulse-energy-repetition-rate-tradeoff.webp\" alt=\"Comparison of a 40 \u00b5J, 1000 Hz source and a 500 \u00b5J, 10 Hz source, illustrating repetition-rate and pulse-energy tradeoffs.\"\/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n<div class=\"wp-block-group alignfull has-background is-layout-constrained wp-container-core-group-is-layout-c12f9e37 wp-block-group-is-layout-constrained\" style=\"background-color:#f5f5f3;margin-top:0;margin-bottom:0;padding-top:72px;padding-right:24px;padding-bottom:72px;padding-left:24px\">\n<h2 class=\"wp-block-heading\" style=\"margin-top:0;margin-bottom:32px;font-size:clamp(30px,4vw,44px);font-weight:700;line-height:1.08\">Where the source fits in a Time-of-Flight rangefinder<\/h2>\n\n<div class=\"wp-block-group alignwide lumexis-visual-card has-border-color has-background is-layout-constrained wp-block-group-is-layout-constrained\" style=\"border-color:#dedede;border-width:1px;border-radius:2px;background-color:#ffffff;margin-top:34px;margin-bottom:34px\">\n<div class=\"wp-block-columns are-vertically-aligned-stretch is-layout-flex wp-container-core-columns-is-layout-946c1612 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-stretch is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:58%\">\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/lumexislaser.com\/wp-content\/uploads\/2026\/08\/time-of-flight-rangefinder-architecture.webp\" alt=\"System architecture from a 1535 nm laser source through transmit optics, target, receive optics, InGaAs detector, and timing electronics.\"\/><\/figure>\n<\/div>\n\n<div class=\"wp-block-column is-vertically-aligned-stretch is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:42%\">\n<div class=\"wp-block-group is-layout-constrained wp-container-core-group-is-layout-b2c065c3 wp-block-group-is-layout-constrained\" style=\"padding-top:clamp(28px,4vw,48px);padding-right:clamp(24px,4vw,48px);padding-bottom:clamp(28px,4vw,48px);padding-left:clamp(24px,4vw,48px)\">\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#a17d2f;margin-bottom:12px;font-size:11px;font-weight:700;letter-spacing:0.12em;text-transform:uppercase\">System architecture<\/p>\n\n<h3 class=\"wp-block-heading\" style=\"margin-top:0;margin-bottom:14px;font-size:clamp(22px,2.4vw,30px);font-weight:650;line-height:1.2\">Review the complete optical and measurement chain<\/h3>\n\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#4c5157;margin-bottom:0;font-size:14px;line-height:1.7\">System architecture from a 1535 nm laser source through transmit optics, target, receive optics, InGaAs detector, and timing electronics.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n<p class=\"wp-block-paragraph\">A direct-ToF instrument measures the interval between an emitted pulse and a detected return. In the simplest form, the one-way distance is:<\/p>\n\n<div class=\"wp-block-group lumexis-formula-card has-background is-layout-constrained wp-container-core-group-is-layout-44c97188 wp-block-group-is-layout-constrained\" style=\"border-left-color:#c9a24b;border-left-width:3px;background-color:#f7f8fa;margin-top:24px;margin-bottom:24px;padding-top:22px;padding-right:26px;padding-bottom:22px;padding-left:26px\">\n<p class=\"has-text-align-center wp-block-paragraph\" style=\"font-size:24px\"><em>R<\/em> = <em>c<\/em>\u0394<em>t<\/em> \/ 2<\/p>\n<\/div>\n\n<p class=\"wp-block-paragraph\">where <em>R<\/em> is one-way distance, <em>c<\/em> is the propagation speed of light, and <em>\u0394 t<\/em> is the measured round-trip interval. The factor of two accounts for the outbound and return paths. NASA\u2019s laser-altimetry explanation applies the same round-trip relationship: optical travel distance is calculated from light speed and elapsed time, then divided by two for one-way range.<sup id=\"fnref:nasa-tof\"><a class=\"footnote-ref\" href=\"#fn:nasa-tof\">1<\/a><\/sup><\/p>\n\n<p class=\"wp-block-paragraph\">The source participates in three timing events:<\/p>\n\n<ol class=\"wp-block-list\">\n<li><strong>Command or trigger:<\/strong> the drive electronics initiate a pulse cycle.<\/li>\n<li><strong>Optical emission:<\/strong> the pulse actually leaves the source. This event may not be identical to the command edge because driver and build-up delays can vary.<\/li>\n<li><strong>Return detection:<\/strong> the receiver identifies a target return and generates a timing event.<\/li>\n<\/ol>\n\n<p class=\"wp-block-paragraph\">For precision timing, define what starts the clock. A command edge is convenient, but an emission monitor or characterized emission delay may provide a better reference. The right approach depends on the required ranging uncertainty, driver design, temperature behavior, repetition mode, and calibration strategy.<\/p>\n\n<h3 class=\"wp-block-heading\" style=\"margin-top:34px;margin-bottom:16px;font-size:clamp(21px,2.4vw,28px);font-weight:650;line-height:1.25\">The receiver must match the wavelength and pulse<\/h3>\n\n<p class=\"wp-block-paragraph\">At 1535 nm, the receiver commonly uses an InGaAs detector rather than a silicon detector. Commercial InGaAs avalanche photodiodes are available with sensitivity covering the 1.5 \u00b5m region and are promoted specifically for distance-measurement and LiDAR receiver applications.<sup id=\"fnref:hamamatsu\"><a class=\"footnote-ref\" href=\"#fn:hamamatsu\">2<\/a><\/sup><\/p>\n\n<p class=\"wp-block-paragraph\">Detector choice is not only a wavelength decision. The engineering team must also define:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>active area and optical field of view;<\/li>\n<li>responsivity or detection efficiency at the operating wavelength;<\/li>\n<li>gain, bandwidth, noise, and temperature behavior;<\/li>\n<li>saturation and recovery after strong near returns;<\/li>\n<li>background-light filtering;<\/li>\n<li>thresholding, constant-fraction, correlation, or other timing method;<\/li>\n<li>false-alarm and valid-detection criteria.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">A stronger optical pulse may help the return signal, but it can also make close targets, internal reflections, and receiver recovery more demanding. Transmitter and receiver should therefore be reviewed together.<\/p>\n<\/div>\n\n<div class=\"wp-block-group alignfull has-background is-layout-constrained wp-container-core-group-is-layout-c12f9e37 wp-block-group-is-layout-constrained\" style=\"background-color:#ffffff;margin-top:0;margin-bottom:0;padding-top:72px;padding-right:24px;padding-bottom:72px;padding-left:24px\">\n<h2 class=\"wp-block-heading\" style=\"margin-top:0;margin-bottom:32px;font-size:clamp(30px,4vw,44px);font-weight:700;line-height:1.08\">How to read the source parameters<\/h2>\n\n<h3 class=\"wp-block-heading\" style=\"margin-top:34px;margin-bottom:16px;font-size:clamp(21px,2.4vw,28px);font-weight:650;line-height:1.25\">Pulse energy: useful energy delivered in one event<\/h3>\n\n<p class=\"wp-block-paragraph\">Pulsenergie <em>E_p<\/em>, expressed in microjoules, is the optical energy in a single pulse. In an otherwise unchanged system, more transmitted energy can increase the energy available for a target return. In a real instrument, \u201cotherwise unchanged\u201d rarely holds: package, drive conditions, repetition rate, divergence, optics, detector dynamic range, and operating life may also change.<\/p>\n\n<p class=\"wp-block-paragraph\">Pulse energy is not a distance rating. The receiver sees only a small fraction of the emitted pulse after beam spreading, target interaction, atmospheric loss, collection loss, filtering, and detector conversion.<\/p>\n\n<h3 class=\"wp-block-heading\" style=\"margin-top:34px;margin-bottom:16px;font-size:clamp(21px,2.4vw,28px);font-weight:650;line-height:1.25\">Pulse width: a nanosecond-scale timing input<\/h3>\n\n<p class=\"wp-block-paragraph\">Lumexis Er:glass source platforms list a 3\u20136 ns pulse-width range. Short pulses support direct-ToF timing because the returned waveform can be localized in time, but pulse width is only one contributor to distance precision. Detector bandwidth, signal-to-noise ratio, timing threshold, pulse shape, target depth, sampling method, and calibration can broaden or shift the measured event.<\/p>\n\n<p class=\"wp-block-paragraph\">The approximate spatial length of a pulse in free space is <em>c\u03c4<\/em>, but the one-way range interval corresponding to a round-trip duration is <em>c\u03c4\/2<\/em>. That does <strong>not<\/strong> mean a 6 ns pulse automatically produces a fixed accuracy of <em>c\u03c4\/2<\/em>. Estimation electronics can locate an event within a waveform, while noise and target structure can move the apparent timing point. Use measured system accuracy and repeatability\u2014not pulse width alone\u2014for acceptance.<\/p>\n\n<h3 class=\"wp-block-heading\" style=\"margin-top:34px;margin-bottom:16px;font-size:clamp(21px,2.4vw,28px);font-weight:650;line-height:1.25\">Peak power: an estimate that requires a pulse-shape assumption<\/h3>\n\n<p class=\"wp-block-paragraph\">For a rectangular-pulse approximation:<\/p>\n\n<div class=\"wp-block-group lumexis-formula-card has-background is-layout-constrained wp-container-core-group-is-layout-44c97188 wp-block-group-is-layout-constrained\" style=\"border-left-color:#c9a24b;border-left-width:3px;background-color:#f7f8fa;margin-top:24px;margin-bottom:24px;padding-top:22px;padding-right:26px;padding-bottom:22px;padding-left:26px\">\n<p class=\"has-text-align-center wp-block-paragraph\" style=\"font-size:24px\"><em>P<\/em><sub>peak<\/sub> \u2248 <em>E<\/em><sub>p<\/sub> \/ \u03c4<sub>p<\/sub><\/p>\n<\/div>\n\n<p class=\"wp-block-paragraph\">A nominal 100 \u00b5J pulse over 3\u20136 ns corresponds to an average power during that idealized pulse interval of approximately 17\u201333 kW. A nominal 500 \u00b5J pulse gives approximately 83\u2013167 kW by the same arithmetic. These are explanatory estimates, not guaranteed product values: actual peak power depends on the measured temporal pulse shape and the definition used for pulse width.<\/p>\n\n<p class=\"wp-block-paragraph\">Peak power is important to return-signal formation and optical-component review. It is not the same as average optical power, electrical input power, or host-supply peak demand.<\/p>\n\n<h3 class=\"wp-block-heading\" style=\"margin-top:34px;margin-bottom:16px;font-size:clamp(21px,2.4vw,28px);font-weight:650;line-height:1.25\">Repetition rate: measurement opportunity, not guaranteed output rate<\/h3>\n\n<p class=\"wp-block-paragraph\">Repetition rate describes how often the source can emit under the specified operating mode. A 1000 Hz optical pulse rate can support frequent sampling, but the finished instrument may output fewer valid ranges because of receiver gating, target loss, processing, filtering, communication, or scanning geometry. Likewise, a 10 Hz source does not guarantee ten accepted distance values per second.<\/p>\n\n<p class=\"wp-block-paragraph\">Define four separate rates in the system specification:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>commanded trigger rate;<\/li>\n<li>confirmed optical emission rate;<\/li>\n<li>receiver acquisition rate;<\/li>\n<li>valid range-output rate.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">Keeping these terms separate prevents a common integration error: treating a source repetition number as the complete instrument\u2019s guaranteed data rate.<\/p>\n\n<h3 class=\"wp-block-heading\" style=\"margin-top:34px;margin-bottom:16px;font-size:clamp(21px,2.4vw,28px);font-weight:650;line-height:1.25\">Average optical power: pulse energy multiplied by rate<\/h3>\n\n<p class=\"wp-block-paragraph\">For a repetitive pulsed source:<\/p>\n\n<div class=\"wp-block-group lumexis-formula-card has-background is-layout-constrained wp-container-core-group-is-layout-44c97188 wp-block-group-is-layout-constrained\" style=\"border-left-color:#c9a24b;border-left-width:3px;background-color:#f7f8fa;margin-top:24px;margin-bottom:24px;padding-top:22px;padding-right:26px;padding-bottom:22px;padding-left:26px\">\n<p class=\"has-text-align-center wp-block-paragraph\" style=\"font-size:24px\"><em>P<\/em><sub>avg<\/sub> = <em>E<\/em><sub>p<\/sub><em>f<\/em><sub>rep<\/sub><\/p>\n<\/div>\n\n<p class=\"wp-block-paragraph\">This relationship explains why a lower-energy, high-rate source can have more average optical output than a higher-energy, low-rate source. It does not provide the source\u2019s electrical efficiency or the peak current required from its driver. Ask separately for driver input, pulse-current behavior, duty cycle, startup sequence, and thermal path.<\/p>\n\n<h3 class=\"wp-block-heading\" style=\"margin-top:34px;margin-bottom:16px;font-size:clamp(21px,2.4vw,28px);font-weight:650;line-height:1.25\">Source divergence: an input to the transmit optics<\/h3>\n\n<p class=\"wp-block-paragraph\">The listed \u226410 or \u226415 mrad value describes the source output, not necessarily the final beam leaving the instrument. A complete rangefinder normally adds collimation or beam-expansion optics to set the output diameter, divergence, wavefront, and optical axis.<\/p>\n\n<div class=\"wp-block-group alignwide lumexis-visual-card has-border-color has-background is-layout-constrained wp-block-group-is-layout-constrained\" style=\"border-color:#dedede;border-width:1px;border-radius:2px;background-color:#ffffff;margin-top:34px;margin-bottom:34px\">\n<div class=\"wp-block-columns are-vertically-aligned-stretch is-layout-flex wp-container-core-columns-is-layout-946c1612 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-stretch is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:58%\">\n<div class=\"wp-block-group is-layout-constrained wp-container-core-group-is-layout-b2c065c3 wp-block-group-is-layout-constrained\" style=\"padding-top:clamp(28px,4vw,48px);padding-right:clamp(24px,4vw,48px);padding-bottom:clamp(28px,4vw,48px);padding-left:clamp(24px,4vw,48px)\">\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#a17d2f;margin-bottom:12px;font-size:11px;font-weight:700;letter-spacing:0.12em;text-transform:uppercase\">Optical delivery<\/p>\n\n<h3 class=\"wp-block-heading\" style=\"margin-top:0;margin-bottom:14px;font-size:clamp(22px,2.4vw,30px);font-weight:650;line-height:1.2\">Balance power, beam delivery, and target geometry<\/h3>\n\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#4c5157;margin-bottom:0;font-size:14px;line-height:1.7\">Optical integration diagram showing raw 10\u201315 mrad source divergence, collimation optics, and the final system transmit beam.<\/p>\n<\/div>\n<\/div>\n\n<div class=\"wp-block-column is-vertically-aligned-stretch is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:42%\">\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/lumexislaser.com\/wp-content\/uploads\/2026\/08\/source-divergence-collimation.webp\" alt=\"Optical integration diagram showing raw 10\u201315 mrad source divergence, collimation optics, and the final system transmit beam.\"\/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n\n<p class=\"wp-block-paragraph\">For a far-field estimate using full-angle divergence:<\/p>\n\n<div class=\"wp-block-group lumexis-formula-card has-background is-layout-constrained wp-container-core-group-is-layout-44c97188 wp-block-group-is-layout-constrained\" style=\"border-left-color:#c9a24b;border-left-width:3px;background-color:#f7f8fa;margin-top:24px;margin-bottom:24px;padding-top:22px;padding-right:26px;padding-bottom:22px;padding-left:26px\">\n<p class=\"has-text-align-center wp-block-paragraph\" style=\"font-size:24px\"><em>d<\/em> \u2248 <em>R<\/em>\u03b8<\/p>\n<\/div>\n\n<p class=\"wp-block-paragraph\">where <em>d<\/em> is the approximate beam diameter on the target, <em>R<\/em> is distance, and <em>\u03b8<\/em> is full-angle divergence in radians. This simple relationship is useful for target-fill thinking, but initial beam diameter, beam profile, focus, aberration, turbulence, and pointing motion can also matter.<\/p>\n\n<p class=\"wp-block-paragraph\">A narrower final beam can place more energy on a small distant target. It also requires tighter boresight, pointing, vibration, and thermal-drift control. The transmit axis must remain inside the receiver field of view and on the intended target throughout operation.<\/p>\n<\/div>\n\n<div class=\"wp-block-group alignfull has-background is-layout-constrained wp-container-core-group-is-layout-c12f9e37 wp-block-group-is-layout-constrained\" style=\"background-color:#f5f5f3;margin-top:0;margin-bottom:0;padding-top:72px;padding-right:24px;padding-bottom:72px;padding-left:24px\">\n<h2 class=\"wp-block-heading\" style=\"margin-top:0;margin-bottom:32px;font-size:clamp(30px,4vw,44px);font-weight:700;line-height:1.08\">Why wavelength alone does not determine system performance<\/h2>\n\n<p class=\"wp-block-paragraph\">The 1535 nm band is useful for compact Er:glass pulsed sources and is compatible with established InGaAs receiver technology. It also supports a different laser-safety design space from shorter near-infrared wavelengths because tissue absorption and applicable exposure limits vary with wavelength.<\/p>\n\n<p class=\"wp-block-paragraph\">However, no wavelength label establishes the classification of a finished product. Classification depends on accessible emission, pulse energy, pulse duration, repetition pattern, aperture, divergence, exposure geometry, measurement method, and the completed optical assembly. Lumexis will define any formal classification or compliance statement only for a documented finished configuration.<\/p>\n\n<p class=\"wp-block-paragraph\">Wavelength also does not remove environmental limits. Fog, rain, dust, aerosols, heat shimmer, condensation, and a dirty external window can reduce usable return or create unwanted near backscatter. Test the assembled transmitter and receiver through the final window under representative conditions.<\/p>\n<\/div>\n\n<div class=\"wp-block-group alignfull has-background is-layout-constrained wp-container-core-group-is-layout-c12f9e37 wp-block-group-is-layout-constrained\" style=\"background-color:#ffffff;margin-top:0;margin-bottom:0;padding-top:72px;padding-right:24px;padding-bottom:72px;padding-left:24px\">\n<h2 class=\"wp-block-heading\" style=\"margin-top:0;margin-bottom:32px;font-size:clamp(30px,4vw,44px);font-weight:700;line-height:1.08\">The range budget: translate the application into source requirements<\/h2>\n\n<p class=\"wp-block-paragraph\">For a diffuse target, a simplified directional relationship can be written as:<\/p>\n\n<div class=\"wp-block-group lumexis-formula-card has-background is-layout-constrained wp-container-core-group-is-layout-44c97188 wp-block-group-is-layout-constrained\" style=\"border-left-color:#c9a24b;border-left-width:3px;background-color:#f7f8fa;margin-top:24px;margin-bottom:24px;padding-top:22px;padding-right:26px;padding-bottom:22px;padding-left:26px\">\n<p class=\"has-text-align-center wp-block-paragraph\" style=\"font-size:24px\"><em>p<\/em><sub>surface<\/sub> = <em>p<\/em><sub>sensor<\/sub> + <em>R<\/em><strong>u<\/strong><sub>look<\/sub><\/p>\n<\/div>\n\n<p class=\"wp-block-paragraph\">where:<\/p>\n\n<ul class=\"wp-block-list\">\n<li><em>E_r<\/em> is received pulse energy;<\/li>\n<li><em>E_t<\/em> is transmitted pulse energy;<\/li>\n<li>\u03b7<sub>tx<\/sub><em> und <\/em>\u03b7<sub>rx<\/sub> represent transmit- and receive-path efficiency;<\/li>\n<li><em>T^2<\/em> represents two-way atmospheric transmission;<\/li>\n<li>F<sub>target<\/sub> represents the useful fraction of the beam footprint on the target;<\/li>\n<li><em>\u03c1<\/em> is an effective target-return term for the chosen model;<\/li>\n<li><em>A_r<\/em> is receiver-aperture area;<\/li>\n<li><em>R<\/em> is range.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">This is an educational proportional relationship, not a universal acceptance equation. Exact link models depend on whether the target fills the beam, target geometry and scattering, beam profile, receiver field of view, background, detection statistics, and system architecture. Published ICESat\/GLAS return-energy analysis likewise links transmitted pulse energy, receiver area, range, surface response, and two-way atmospheric transmission.<sup id=\"fnref:glas-link\"><a class=\"footnote-ref\" href=\"#fn:glas-link\">3<\/a><\/sup><\/p>\n\n<h3 class=\"wp-block-heading\" style=\"margin-top:34px;margin-bottom:16px;font-size:clamp(21px,2.4vw,28px);font-weight:650;line-height:1.25\">Eight range-budget questions that improve a source recommendation<\/h3>\n\n<h4>1. What is the target?<\/h4>\n\n<p class=\"wp-block-paragraph\">Give dimensions, material, finish, color only as supporting context, expected reflectivity at the operating wavelength if known, and the range of incidence angles. A large diffuse wall and a narrow edge are not equivalent targets.<\/p>\n\n<h4>2. Does the target fill the beam footprint?<\/h4>\n\n<p class=\"wp-block-paragraph\">If the beam footprint overfills the target, only part of the transmitted energy interacts usefully. A higher-energy source may not compensate efficiently for poor pointing or an oversized final beam.<\/p>\n\n<h4>3. What is the normal range, not only the maximum?<\/h4>\n\n<p class=\"wp-block-paragraph\">The normal working distance often determines the best source. A system designed only around an extreme maximum can create excessive near-return signal, unnecessary size, lower rate, higher cost, or more difficult validation.<\/p>\n\n<h4>4. What atmosphere and window are realistic?<\/h4>\n\n<p class=\"wp-block-paragraph\">Specify visibility, humidity, dust, rain, fog, operating altitude, external-window material, coatings, incidence angle, and contamination plan. Loss applies on the outgoing and return paths.<\/p>\n\n<h4>5. What receive aperture is available?<\/h4>\n\n<p class=\"wp-block-paragraph\">For a circular aperture, collection area is <em>A_r=\u03c0 D^2\/4<\/em>. Increasing diameter can improve collection, but it also affects envelope, mass, window size, field of view, alignment, and cost.<\/p>\n\n<h4>6. What detector and threshold will be used?<\/h4>\n\n<p class=\"wp-block-paragraph\">Receiver noise and background establish how much return is needed for a defined probability of detection and false-alarm level. \u201cDetectable\u201d must be connected to an acceptance criterion.<\/p>\n\n<h4>7. How stable is the line of sight?<\/h4>\n\n<p class=\"wp-block-paragraph\">Include pointing error, vibration, mechanical tolerance, boresight drift, optical-axis shift, and any scanner or camera alignment error. Narrower divergence only helps if the system consistently illuminates the intended target.<\/p>\n\n<h4>8. What valid-measurement behavior is required?<\/h4>\n\n<p class=\"wp-block-paragraph\">Define missed returns, false returns, multi-surface scenes, first\/strongest\/last-return logic, gating, timeout, and invalid-data reporting. The source creates pulses; the complete ranging system decides which return becomes a distance.<\/p>\n<\/div>\n\n<div class=\"wp-block-group alignfull has-background is-layout-constrained wp-container-core-group-is-layout-c12f9e37 wp-block-group-is-layout-constrained\" style=\"background-color:#f5f5f3;margin-top:0;margin-bottom:0;padding-top:72px;padding-right:24px;padding-bottom:72px;padding-left:24px\">\n<h2 class=\"wp-block-heading\" style=\"margin-top:0;margin-bottom:32px;font-size:clamp(30px,4vw,44px);font-weight:700;line-height:1.08\">Integration checklist for OEM engineering teams<\/h2>\n\n<h3 class=\"wp-block-heading\" style=\"margin-top:34px;margin-bottom:16px;font-size:clamp(21px,2.4vw,28px);font-weight:650;line-height:1.25\">Electrical drive and trigger<\/h3>\n\n<ul class=\"wp-block-list\">\n<li>Confirm the exact source configuration and compatible driver before applying power.<\/li>\n<li>Define supply limits at the source pins under transient conditions, not only at the bench supply.<\/li>\n<li>Document trigger level, edge, pulse duration, allowable rate, inhibit behavior, and startup sequence.<\/li>\n<li>Separate the optical-emission reference from the command trigger when the uncertainty budget requires it.<\/li>\n<li>Review grounding, cable impedance, electromagnetic coupling, and receiver isolation in the complete enclosure.<\/li>\n<\/ul>\n\n<h3 class=\"wp-block-heading\" style=\"margin-top:34px;margin-bottom:16px;font-size:clamp(21px,2.4vw,28px);font-weight:650;line-height:1.25\">Mechanical mounting<\/h3>\n\n<ul class=\"wp-block-list\">\n<li>Use the approved mounting datum and fastener limits from the order-specific drawing.<\/li>\n<li>Avoid chassis stress that can alter alignment or damage the source package.<\/li>\n<li>Define the optical-axis location and angular tolerance relative to the host datum.<\/li>\n<li>Reserve adjustment or calibration authority if the production tolerance stack cannot hold boresight directly.<\/li>\n<li>Verify mass-property and vibration requirements on the assembled instrument.<\/li>\n<\/ul>\n\n<h3 class=\"wp-block-heading\" style=\"margin-top:34px;margin-bottom:16px;font-size:clamp(21px,2.4vw,28px);font-weight:650;line-height:1.25\">Optical train<\/h3>\n\n<ul class=\"wp-block-list\">\n<li>Select collimator focal length, clear aperture, coating, and working distance for the real source output.<\/li>\n<li>Check beam clipping across tolerance and temperature.<\/li>\n<li>Control feedback and internal reflections from lenses, filters, and the external window.<\/li>\n<li>Keep transmit leakage out of the receiver or define recovery and gating around it.<\/li>\n<li>Measure final divergence and boresight after enclosure assembly, not only on the optical bench.<\/li>\n<\/ul>\n\n<h3 class=\"wp-block-heading\" style=\"margin-top:34px;margin-bottom:16px;font-size:clamp(21px,2.4vw,28px);font-weight:650;line-height:1.25\">Thermal and environmental design<\/h3>\n\n<p class=\"wp-block-paragraph\">The platform operating-temperature range is \u221240 to +65 \u00b0C, but finished-system performance still depends on the driver, mounting, enclosure, optics, detector, and calibration. A source operating within temperature limits does not guarantee constant pulse energy, timing, alignment, or range for the complete instrument.<\/p>\n\n<p class=\"wp-block-paragraph\">Build the qualification plan around:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>cold start and hot start;<\/li>\n<li>pulse energy and emission delay over temperature;<\/li>\n<li>high- and low-rate duty profiles;<\/li>\n<li>optical-axis drift;<\/li>\n<li>window condensation and contamination;<\/li>\n<li>vibration before and after alignment;<\/li>\n<li>receiver noise and detection threshold over temperature;<\/li>\n<li>repeated cycling and acceptance limits.<\/li>\n<\/ul>\n\n<h3 class=\"wp-block-heading\" style=\"margin-top:34px;margin-bottom:16px;font-size:clamp(21px,2.4vw,28px);font-weight:650;line-height:1.25\">Production and acceptance<\/h3>\n\n<p class=\"wp-block-paragraph\">Convert system intent into measurements that can be repeated:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>pulse energy and measurement method;<\/li>\n<li>pulse width definition and instrument bandwidth;<\/li>\n<li>center wavelength and spectral method;<\/li>\n<li>repetition mode and duty profile;<\/li>\n<li>source divergence definition and measurement plane;<\/li>\n<li>optical-axis datum and allowed error;<\/li>\n<li>electrical test conditions;<\/li>\n<li>environmental state and stabilization time;<\/li>\n<li>traceability, sampling plan, and pass\/fail limits.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">The more precisely these items are defined before prototype release, the easier it is to compare samples, control integration changes, and scale production.<\/p>\n<\/div>\n\n<div class=\"wp-block-group alignfull has-background is-layout-constrained wp-container-core-group-is-layout-c12f9e37 wp-block-group-is-layout-constrained\" style=\"background-color:#ffffff;margin-top:0;margin-bottom:0;padding-top:72px;padding-right:24px;padding-bottom:72px;padding-left:24px\">\n<h2 class=\"wp-block-heading\" style=\"margin-top:0;margin-bottom:32px;font-size:clamp(30px,4vw,44px);font-weight:700;line-height:1.08\">What to include in your RFQ<\/h2>\n\n<figure class=\"wp-block-table alignwide is-style-stripes lumexis-solution-table\"><table>\n<thead>\n<tr>\n<th>Category<\/th>\n<th>Information to provide<\/th>\n<th>Why Lumexis needs it<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Application<\/td>\n<td>compact ranging, camera-assisted measurement, field instrument, scientific ToF, or OEM subsystem<\/td>\n<td>establishes the operating pattern and integration boundary<\/td>\n<\/tr>\n<tr>\n<td>Ziel<\/td>\n<td>size, material, return behavior, incidence angle, background<\/td>\n<td>determines useful return and detection challenge<\/td>\n<\/tr>\n<tr>\n<td>Distance<\/td>\n<td>minimum, normal, maximum, and required margin<\/td>\n<td>prevents selection around one headline number<\/td>\n<\/tr>\n<tr>\n<td>Rate<\/td>\n<td>trigger, emission, acquisition, and valid-output targets<\/td>\n<td>separates source rate from system data rate<\/td>\n<\/tr>\n<tr>\n<td>Transmit optics<\/td>\n<td>aperture, final divergence, beam diameter, window<\/td>\n<td>connects source divergence to target fill and alignment<\/td>\n<\/tr>\n<tr>\n<td>Receiver<\/td>\n<td>aperture, field of view, InGaAs device, filter, bandwidth<\/td>\n<td>completes the range budget<\/td>\n<\/tr>\n<tr>\n<td>Timing<\/td>\n<td>trigger definition, emission reference, precision, latency<\/td>\n<td>defines the distance-measurement chain<\/td>\n<\/tr>\n<tr>\n<td>Mechanical<\/td>\n<td>available envelope, mounting datum, mass limit, optical axis<\/td>\n<td>identifies packaging and alignment constraints<\/td>\n<\/tr>\n<tr>\n<td>Electrical<\/td>\n<td>source voltage, driver approach, control interface, duty cycle<\/td>\n<td>supports compatible source and driver integration<\/td>\n<\/tr>\n<tr>\n<td>Umgebung<\/td>\n<td>temperature, vibration, humidity, contamination, visibility<\/td>\n<td>defines validation conditions<\/td>\n<\/tr>\n<tr>\n<td>Qualification<\/td>\n<td>prototype quantity, test plan, acceptance limits, production forecast<\/td>\n<td>aligns development samples with scalable supply<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/figure>\n<\/div>\n\n<div class=\"wp-block-group alignfull has-background is-layout-constrained wp-container-core-group-is-layout-c12f9e37 wp-block-group-is-layout-constrained\" style=\"background-color:#f5f5f3;margin-top:0;margin-bottom:0;padding-top:72px;padding-right:24px;padding-bottom:72px;padding-left:24px\">\n\n<div class=\"wp-block-group lumexis-related has-background is-layout-constrained wp-container-core-group-is-layout-c48c1f9f wp-block-group-is-layout-constrained\" style=\"background-color:#f5f5f3;padding-top:clamp(26px,3.5vw,40px);padding-right:clamp(20px,3.5vw,36px);padding-bottom:clamp(26px,3.5vw,40px);padding-left:clamp(20px,3.5vw,36px)\">\n\n<h2 class=\"wp-block-heading\" style=\"font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.12\">Matched Lumexis laser sources<\/h2>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:15px;line-height:1.6\">Er:glass transmitters from 40 \u00b5J to 500 \u00b5J, for builders integrating their own receiver and timing.<\/p>\n\n\n<ul class=\"wp-block-list\" style=\"font-size:15px;line-height:1.7\"><li><a href=\"https:\/\/lumexislaser.com\/de\/erbium-glass-lasers\/\">1535 nm Er:glass laser sources \u2014 full range<\/a><\/li><li><a href=\"https:\/\/lumexislaser.com\/de\/1535nm-100uj-erbium-glass-laser-source\/\">1535-nm-100-\u00b5J-Erbiumglas-Laserquelle<\/a><\/li><li><a href=\"https:\/\/lumexislaser.com\/de\/1535nm-500uj-erbium-glass-laser-source\/\">1535-nm-500-\u00b5J-Erbiumglas-Laserquelle<\/a><\/li><li><a href=\"https:\/\/lumexislaser.com\/de\/laser-rangefinder-modules\/\">1535 nm laser rangefinder modules \u2014 complete modules instead<\/a><\/li><\/ul>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:15px;line-height:1.6\">If you need a finished ranging channel rather than a bare source, see <a href=\"https:\/\/lumexislaser.com\/de\/solutions\/laser-ranging\/\">laser ranging solutions<\/a>. To review a range budget, <a href=\"https:\/\/lumexislaser.com\/de\/contact\/\">talk to a Lumexis engineer<\/a>.<\/p>\n\n<\/div>\n\n\n<h2 class=\"wp-block-heading\" style=\"margin-top:0;margin-bottom:32px;font-size:clamp(30px,4vw,44px);font-weight:700;line-height:1.08\">H\u00e4ufig gestellte Fragen<\/h2>\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Ist eine 1535-nm-Er:glas-Laserquelle ein vollst\u00e4ndiger Laser-Entfernungsmesser?<\/summary>\n<p class=\"wp-block-paragraph\">Nein. Es ist der gepulste Emitter, der im Sender verwendet wird. Ein vollst\u00e4ndiger Entfernungsmesser ben\u00f6tigt au\u00dferdem Treiberelektronik, Sendeoptik, einen Empf\u00e4nger, Detektor, Zeitmess- und Detektionselektronik, mechanische Ausrichtung, einen externen optischen Pfad und eine Host-Schnittstelle.<\/p>\n<\/details>\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Welche Pulsenergie sollte ich f\u00fcr die Entfernungsmessung \u00fcber gro\u00dfe Distanzen w\u00e4hlen?<\/summary>\n<p class=\"wp-block-paragraph\">W\u00e4hlen Sie anhand eines Budgets aus, nicht nur anhand der Entfernung. H\u00f6here Pulsenergie kann die Sendermarge erh\u00f6hen, aber Zielf\u00fcllung, atmosph\u00e4rische Transmission, Empfangs\u00f6ffnung, Detektorempfindlichkeit, Hintergrund, Zeitmessmethode und akzeptable Erkennungswahrscheinlichkeit k\u00f6nnen ebenso entscheidend sein. Senden Sie diese Eingaben f\u00fcr eine aussagekr\u00e4ftige Empfehlung.<\/p>\n<\/details>\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Ist 40 \u00b5J bei 1000 Hz schw\u00e4cher als 500 \u00b5J bei 10 Hz?<\/summary>\n<p class=\"wp-block-paragraph\">Es ist kein sinnvoller Ein-Wort-Vergleich. Die 500-\u00b5J-Quelle liefert mehr Energie pro Puls, was eine st\u00e4rkere einzelne R\u00fcckkehr unterst\u00fctzen kann. Die 40-\u00b5J-Quelle emittiert h\u00e4ufiger und hat eine h\u00f6here nominelle mittlere optische Ausgangsleistung bei der angegebenen maximalen Rate. Die richtige Wahl h\u00e4ngt von Erfassungsrate, Zielr\u00fcckkehr, Detektorverhalten, Leistung, thermischem Design und Scan- oder Abtastmethode ab.<\/p>\n<\/details>\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Entspricht die angegebene Divergenz von 10\u201315 mrad der endg\u00fcltigen Strahldivergenz des Entfernungsmessers?<\/summary>\n<p class=\"wp-block-paragraph\">Not necessarily. It is the source-output specification. The finished transmitter normally uses collimation or beam-expansion optics to establish the final beam diameter and divergence. Final performance must be measured after the optical and mechanical assembly is aligned.<\/p>\n<\/details>\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Can pulse width be converted directly into distance accuracy?<\/summary>\n<p class=\"wp-block-paragraph\">No. Pulse width is part of the timing problem, but accuracy also depends on waveform shape, detector and electronics bandwidth, signal-to-noise ratio, timing threshold, calibration, target depth, and environmental conditions. Use measured system accuracy under stated test conditions.<\/p>\n<\/details>\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Can Lumexis customize the source for an OEM instrument?<\/summary>\n<p class=\"wp-block-paragraph\">Lumexis can review project-specific requirements for optical output, repetition mode, package integration, mounting, drive compatibility, environmental use, testing, and production supply. Feasibility and final specifications are confirmed through engineering review.<\/p>\n<\/details>\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>What receiver technology is commonly used at 1535 nm?<\/summary>\n<p class=\"wp-block-paragraph\">InGaAs photodiodes and avalanche photodiodes are widely used in the 1.5 \u00b5m region. Detector selection should also account for active area, gain, bandwidth, noise, background light, temperature, saturation, and timing method.<sup id=\"fnref2:hamamatsu\"><a class=\"footnote-ref\" href=\"#fn:hamamatsu\">2<\/a><\/sup><\/p>\n<\/details>\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>What data should be collected during prototype tests?<\/summary>\n<p class=\"wp-block-paragraph\">Record the source configuration, pulse energy, pulse width, repetition mode, emission reference, target, distance, target angle, atmosphere, transmit optics, receiver settings, temperature, supply behavior, raw detection state, and valid-range output. This makes failures diagnosable and comparisons repeatable.<\/p>\n<\/details>\n<\/div>\n\n<div class=\"wp-block-group alignfull has-background is-layout-constrained wp-container-core-group-is-layout-c12f9e37 wp-block-group-is-layout-constrained\" style=\"background-color:#ffffff;margin-top:0;margin-bottom:0;padding-top:72px;padding-right:24px;padding-bottom:72px;padding-left:24px\">\n<h2 class=\"wp-block-heading\" style=\"margin-top:0;margin-bottom:32px;font-size:clamp(30px,4vw,44px);font-weight:700;line-height:1.08\">Request a source recommendation<\/h2>\n\n<p class=\"wp-block-paragraph\">Send Lumexis your application, target, distance envelope, required rate, transmit aperture, final divergence, receiver concept, size and mass limits, temperature range, prototype quantity, and schedule. Our engineers will help map the project to the 40\u2013500 \u00b5J platform and identify the optical, timing, and qualification questions that must be closed before production.<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>Suggested CTA:<\/strong> Request a 1535 nm ranging laser source recommendation.<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>Secondary CTA:<\/strong> Share your range budget for engineering review.<\/p>\n\n<p class=\"wp-block-paragraph\">Lumexis \u2014 precision laser sources, engineered for the real world.<\/p>\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n<\/div>\n\n<div class=\"wp-block-group alignfull has-background is-layout-constrained wp-container-core-group-is-layout-c12f9e37 wp-block-group-is-layout-constrained\" style=\"background-color:#f5f5f3;margin-top:0;margin-bottom:0;padding-top:72px;padding-right:24px;padding-bottom:72px;padding-left:24px\">\n<h2 class=\"wp-block-heading\" style=\"margin-top:0;margin-bottom:32px;font-size:clamp(30px,4vw,44px);font-weight:700;line-height:1.08\">Technical references<\/h2>\n\n<h3 class=\"wp-block-heading\" style=\"margin-top:34px;margin-bottom:16px;font-size:clamp(21px,2.4vw,28px);font-weight:650;line-height:1.25\">Additional technical background consulted<\/h3>\n\n<ul class=\"wp-block-list\">\n<li>G. J. Sp\u00fchler et al., \u201cExperimentally confirmed design guidelines for passively Q-switched microchip lasers using semiconductor saturable absorbers,\u201d provides general pulse-generation background; it does not document the internal construction of Lumexis products. <a href=\"https:\/\/opg.optica.org\/abstract.cfm?uri=josab-16-3-376\" target=\"_blank\" rel=\"noopener\">Optica article record<\/a><\/li>\n<li>R. H\u00e4ring et al., \u201cPassively Q-switched microchip laser at 1.5 \u00b5m,\u201d provides peer-reviewed background on compact pulsed emitters in this wavelength region; Lumexis does not infer an identical architecture from this source. <a href=\"https:\/\/opg.optica.org\/josab\/abstract.cfm?uri=josab-18-12-1805\" target=\"_blank\" rel=\"noopener\">Optica article record<\/a><\/li>\n<\/ul>\n\n<div class=\"footnote\">\n<hr\/>\n<ol>\n<li id=\"fn:nasa-tof\">\n<p>NASA Goddard Space Flight Center, <em>The Geoscience Laser Altimeter System: How laser altimetry measures distance<\/em>. <a href=\"https:\/\/science.gsfc.nasa.gov\/attic\/glas\/human.html\" target=\"_blank\" rel=\"noopener\">Educational technical overview<\/a>\u00a0<a class=\"footnote-backref\" href=\"#fnref:nasa-tof\" title=\"Jump back to footnote 1 in the text\">\u21a9<\/a><\/p>\n<\/li>\n<li id=\"fn:hamamatsu\">\n<p>Hamamatsu Photonics, <em>InGaAs APDs for distance measurement and LiDAR applications<\/em>. <a href=\"https:\/\/www.hamamatsu.com\/us\/en\/product\/optical-sensors\/distance-position-sensor\/lidar-sensor\/ingaas-apd.html\" target=\"_blank\" rel=\"noopener\">Product and technical overview<\/a>\u00a0<a class=\"footnote-backref\" href=\"#fnref:hamamatsu\" title=\"Jump back to footnote 2 in the text\">\u21a9<\/a><a class=\"footnote-backref\" href=\"#fnref2:hamamatsu\" title=\"Jump back to footnote 2 in the text\">\u21a9<\/a><\/p>\n<\/li>\n<li id=\"fn:glas-link\">\n<p>NASA\/ICESat research, <em>ICESat\/GLAS Altimetry Measurements: Received Signal Dynamic Range and Saturation Correction<\/em>. <a href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC6110114\/\" target=\"_blank\" rel=\"noopener\">Open-access paper<\/a>\u00a0<a class=\"footnote-backref\" href=\"#fnref:glas-link\" title=\"Jump back to footnote 3 in the text\">\u21a9<\/a><\/p>\n<\/li>\n<\/ol>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Select a 1535 nm Er:glass laser source by application, pulse energy, repetition rate, pulse width and divergence for precision ToF ranging integration.<\/p>","protected":false},"author":3,"featured_media":901,"parent":11,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-902","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/lumexislaser.com\/de\/wp-json\/wp\/v2\/pages\/902","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lumexislaser.com\/de\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/lumexislaser.com\/de\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/lumexislaser.com\/de\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/lumexislaser.com\/de\/wp-json\/wp\/v2\/comments?post=902"}],"version-history":[{"count":5,"href":"https:\/\/lumexislaser.com\/de\/wp-json\/wp\/v2\/pages\/902\/revisions"}],"predecessor-version":[{"id":1782,"href":"https:\/\/lumexislaser.com\/de\/wp-json\/wp\/v2\/pages\/902\/revisions\/1782"}],"up":[{"embeddable":true,"href":"https:\/\/lumexislaser.com\/de\/wp-json\/wp\/v2\/pages\/11"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lumexislaser.com\/de\/wp-json\/wp\/v2\/media\/901"}],"wp:attachment":[{"href":"https:\/\/lumexislaser.com\/de\/wp-json\/wp\/v2\/media?parent=902"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}