{"id":2995,"date":"2015-06-10T18:16:35","date_gmt":"2015-06-11T01:16:35","guid":{"rendered":""},"modified":"2025-07-25T09:41:13","modified_gmt":"2025-07-25T16:41:13","slug":"2995","status":"publish","type":"post","link":"https:\/\/www.vernier.com\/til\/2995","title":{"rendered":"Diffraction Apparatus Troubleshooting and FAQs"},"content":{"rendered":"<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<h3 class=\"wp-block-heading\"><a href=\"\/product\/diffraction-apparatus\/\">Diffraction Apparatus<\/a> (<nobr>DAK<\/nobr>)<\/h3>\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<p class=\"wp-block-paragraph\"><a href=\"\/manuals\/DAK\">Specifications and User Guide<\/a><\/p>\n<\/div>\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/www.vernier.com\/wp-content\/uploads\/2019\/11\/product.dak_._hero.001-scaled.jpg\" alt=\"\"\/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<h3 class=\"wp-block-heading\">Troubleshooting<\/h3>\n<ul class=\"wp-block-list\">\n<li><strong>Primary Test: <\/strong>Connect the translation sensor and light sensor to an interface. The translation sensor will not auto-ID on LabPro. Move the light sensor on the translation stage. Determine if the reading changes. On any light sensor range, expose the sensor to room light and then cover it. Does the reading change? Apply power to the laser. Does it light?<\/li>\n<\/ul>\n<ul class=\"wp-block-list\">\n<li><strong>Secondary Test:<\/strong> Perform an intensity <i>vs.<\/i> position measurement for a 0.04 mm single slit. Position the laser on the track about 10 cm from the slit assembly. Set the laser to pass through the 0.04 mm single slit. Position the stage unit at the far end of the track facing the slits. Adjust the laser vertical position so that the pattern falls half-way up the entrance slit on the light sensor. Adjust the laser horizontal position for the brightest pattern. Choose 10 uW range. Move the stage to the extreme right. With the connections used for the primary test, choose New from the File menu in either Logger <i>Pro<\/i> or LabQuest App.<\/li>\n<\/ul>\n<p class=\"wp-block-paragraph\">Click collect; slowly, over the course of 15-20 seconds, move the stage across the diffraction pattern. Observe the pattern on screen.<\/p>\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<h3 class=\"wp-block-heading\">Additional Troubleshooting<\/h3>\n<ul class=\"wp-block-list\">\n<li><a href=\"\/til\/2947\/\">What is the tolerance on the slits and lasers of the Diffraction Apparatus?<\/a><\/li>\n<\/ul>\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<h3 class=\"wp-block-heading\">Specifications<\/h3>\n<ul class=\"wp-block-list\">\n<li><strong>Diffraction Apparatus Sensors<\/strong><br \/>\u26ac Light Sensor Full Scale Ranges: 1, 10, and 100 \u00b5W<br \/>\u26ac Linear Position Sensor range: 150 mm<br \/>\u26ac Linear Position Sensor resolution: 40 \u00b5m<\/li>\n<li><strong>Red Laser<\/strong> (included Class 2 laser)<br \/>\u26ac Wavelength: 635 \u00b15 nm<\/li>\n<li><strong>Green Laser<\/strong> (Optional Class 2 laser)<br \/>\u26ac Wavelength: 520 \u00b110 nm (if purchased after August, 2024)<br \/>\u26ac Wavelength: 532 \u00b11 nm (if purchased before August, 2024)<\/li>\n<li><strong>Slit configurations<\/strong><br \/>\u26ac Single Slits (4 different widths)<br \/>\u26ac Double Slits: (4 configurations varying width and separation)<br \/>\u26ac Variable Single Slit: 0.02 \u2013 0.2 mm width, continuous variation<br \/>\u26ac Variable Double slit: 0.04 mm width, variable spacing 0.125 \u2013 0.75 mm, continuous variation<br \/>\u26ac Multiple Slits: 2, 3, 4, and 5 slits<br \/>\u26ac Comparisons: 4 pairs of slits for comparisons between number, width, and separation<br \/>\u26ac Other shapes: Slit and line comparison, and hole comparison.<\/li>\n<\/ul>\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<h3 class=\"wp-block-heading\">Calibration<\/h3>\n<p class=\"wp-block-paragraph\">Not required nor possible.<\/p>\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h3 class=\"wp-block-heading\">Related Products<\/h3>\n<ul class=\"wp-block-list\">\n<li><a href=\"\/product\/combination-1-2-m-track-optics-bench\/\">Combination Track\/Optics Bench<\/a> (<nobr>TRACK<\/nobr>)<\/li>\n<li><a href=\"\/product\/green-diffraction-laser\/\">Green Diffraction Laser<\/a> (<nobr>GDL-DAK<\/nobr>)<\/li>\n<li><a href=\"\/product\/replacement-screen-for-optics-expansion-kit\/\">Replacement Screen for Optics Expansion Kit<\/a> (<nobr>SCRN-OEK<\/nobr>)<\/li>\n<\/ul>\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<h4 class=\"wp-block-heading\"><strong>OTHER PRODUCTS FOR OPTICS <\/strong><\/h4>\n<ul class=\"wp-block-list\">\n<li><a href=\"\/product\/optics-expansion-kit\/\">Optics Expansion Kit<\/a> (<nobr>OEK<\/nobr>)<\/li>\n<li><a href=\"\/product\/mirror-set-for-optics-expansion-kit\/\">Mirror Set for Optics Expansion Kit<\/a> (<nobr>M-OEK<\/nobr>)<\/li>\n<li><a href=\"\/product\/polarizer-analyzer-for-optics-expansion-kit\/\">Polarizer\/Analyzer for Optics Expansion Kit<\/a> (<nobr>PAK-OEK<\/nobr>)<\/li>\n<li><a href=\"\/product\/color-mixer-kit\/\">Color Mixer Kit<\/a> (<nobr>CM-OEK<\/nobr>)<\/li>\n<\/ul>\n<\/div>\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h3 class=\"wp-block-heading\">Replacement Parts<\/h3>\n<ul class=\"wp-block-list\">\n<li><a href=\"\/product\/red-diffraction-laser\/\">Red Diffraction Laser<\/a> (<nobr>RDL-DAK<\/nobr>)<\/li>\n<li><a href=\"\/product\/diffraction-slit-system\/\">Diffraction Slit System<\/a> (<nobr>DSS-DAK<\/nobr>)<\/li>\n<li><a href=\"\/product\/combination-linear-position-and-high-sensitivity-light-sensor\/\">Combination Linear Position and High Sensitivity Light Sensor<\/a> (<nobr>LPL-DAK<\/nobr>)<\/li>\n<li><a href=\"\/product\/labquest-power-supply\/\">LabQuest<sup>&reg;<\/sup> Power Supply<\/a> (<nobr>LQ3-PS<\/nobr>) <br \/>(for powering the laser)<\/li>\n<\/ul>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Specifications and User Guide Troubleshooting Click collect; slowly, over the course of 15-20 seconds, move the stage across the diffraction pattern. Observe the pattern on&#8230;<\/p>\n","protected":false},"author":43901,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[],"tags":[5050,2043,5049,905,5051,515,720],"class_list":["post-2995","post","type-post","status-publish","format-standard","hentry","tag-apparatus","tag-dak","tag-dakmain","tag-diffraction","tag-double-slit","tag-interference","tag-maintil"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts\/2995","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/users\/43901"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/comments?post=2995"}],"version-history":[{"count":0,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts\/2995\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/media?parent=2995"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/categories?post=2995"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/tags?post=2995"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}