{"id":7423,"date":"2018-03-21T10:30:39","date_gmt":"2018-03-21T10:30:39","guid":{"rendered":"https:\/\/www.ophiropt.com\/blog\/laser-measurement\/?p=7423"},"modified":"2024-05-08T16:15:46","modified_gmt":"2024-05-08T16:15:46","slug":"the-only-hand-held-ophir-meter-that-measures-laser-exposuredosage","status":"publish","type":"post","link":"https:\/\/www.ophiropt.com\/blog\/the-only-hand-held-ophir-meter-that-measures-laser-exposuredosage\/","title":{"rendered":"The only hand-held Ophir meter that measures laser exposure\/dosage"},"content":{"rendered":"<p>Usually, when discussing laser measurements, we often refer to the power or energy of the laser.<\/p>\n<p>Sometimes though, we need to measure the total energy <strong>Exposure<\/strong> \u2013<span style=\"text-decoration: underline;\"> the total sum of the laser energy deposited over a set amount of time<\/span>.<!--more--><\/p>\n<h3>Measure Exposure?\u00a0Why?<\/h3>\n<p>Exposure is an important laser parameter to measure in certain applications, specifically <strong>photolithography, medical lasers and UV curing<\/strong>.<br \/>\nIn these applications, the instantaneous power of the laser is less important than the total exposure that the patient or wafer is exposed to.<\/p>\n<p>We added a feature to our <a href=\"https:\/\/www.ophiropt.com\/en\/f\/starbright-power-meter\">StarBright<\/a> meter to support exposure measurements with a standard Ophir photodiode sensor.<\/p>\n<p><a href=\"\/blog\/wp-content\/uploads\/2018\/03\/20.3-blog-post-1.png\"><img decoding=\"async\" class=\"aligncenter wp-image-7424 lazyload\" data-src=\"\/blog\/wp-content\/uploads\/2018\/03\/20.3-blog-post-1.png\" alt=\"\" width=\"794\" height=\"370\" data-srcset=\"https:\/\/www.ophiropt.com\/blog\/wp-content\/uploads\/2018\/03\/20.3-blog-post-1.png 849w, https:\/\/www.ophiropt.com\/blog\/wp-content\/uploads\/2018\/03\/20.3-blog-post-1-300x140.png 300w, https:\/\/www.ophiropt.com\/blog\/wp-content\/uploads\/2018\/03\/20.3-blog-post-1-768x358.png 768w, https:\/\/www.ophiropt.com\/blog\/wp-content\/uploads\/2018\/03\/20.3-blog-post-1-804x375.png 804w\" data-sizes=\"(max-width: 794px) 100vw, 794px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 794px; --smush-placeholder-aspect-ratio: 794\/370;\" \/><\/a><\/p>\n<p><a href=\"https:\/\/www.ophiropt.com\/en\/f\/starbright-power-meter\">StarBright <\/a>is presently the <strong>only<\/strong> hand-held Ophir meter to support exposure measurements with a photodiode sensor.<\/p>\n<p>In Exposure mode with a photodiode sensor, the StarBright meter is actually measuring power (at a rate of 15 times per second) and then sums computed results into accumulated energy over the elapsed time, which is displayed on the StarBright screen.<\/p>\n<p><a href=\"\/blog\/wp-content\/uploads\/2018\/03\/20.3-Blog-post2.png\"><img decoding=\"async\" width=\"319\" height=\"240\" class=\"aligncenter size-full wp-image-7425 lazyload\" data-src=\"\/blog\/wp-content\/uploads\/2018\/03\/20.3-Blog-post2.png\" alt=\"\" data-srcset=\"https:\/\/www.ophiropt.com\/blog\/wp-content\/uploads\/2018\/03\/20.3-Blog-post2.png 319w, https:\/\/www.ophiropt.com\/blog\/wp-content\/uploads\/2018\/03\/20.3-Blog-post2-300x226.png 300w\" data-sizes=\"(max-width: 319px) 100vw, 319px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 319px; --smush-placeholder-aspect-ratio: 319\/240;\" \/><\/a><\/p>\n<h3>Measure Exposure? How?<\/h3>\n<p>You can measure exposure with a StarBright meter and a photodiode sensor via two methods: manual or timeout:<br \/>\n\u2022 Manual Exposure Measurement \u2013 you manually start\/stop the exposure measurement.<br \/>\n\u2022 Timed Exposure Measurement \u2013 you first select a pre-set timeout interval, and then start the exposure measurement.<\/p>\n<h3>Find out more new features of the StarBright laser power meter:<\/h3>\n<ul>\n<li>\u201c<a href=\"https:\/\/blog.ophiropt.com\/?p=5851\">Power from Pulse<\/a>\u201d feature for measuring high power lasers at short irradiance times with a small sensor<\/li>\n<li><a href=\"https:\/\/blog.ophiropt.com\/?p=5765\">Full post on StarBright advantages<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Usually, when discussing laser measurements, we often refer to the power or energy of the laser. Sometimes though, we need [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":7429,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[5,551],"tags":[56],"ophirposttype":[349],"class_list":["post-7423","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-laser-power-energy-measurement","category-laser-power-energy-sensors-en-2","tag-meters","ophirposttype-blogpost-en"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>The only hand-held Ophir meter that measures laser exposure\/dosage - Ophir Photonics<\/title>\n<meta name=\"description\" content=\"Usually, when discussing laser measurements, we often refer to the power or energy of the laser. 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