{"id":3876,"date":"2014-08-20T09:25:18","date_gmt":"2014-08-20T09:25:18","guid":{"rendered":"https:\/\/www.ophiropt.com\/blog\/laser-measurement\/?p=3876"},"modified":"2024-09-23T08:36:01","modified_gmt":"2024-09-23T08:36:01","slug":"how-to-increase-laser-welding-efficiency-and-reduce-scrap","status":"publish","type":"post","link":"https:\/\/www.ophiropt.com\/blog\/how-to-increase-laser-welding-efficiency-and-reduce-scrap\/","title":{"rendered":"How to Increase Laser Welding Efficiency and Reduce Scrap"},"content":{"rendered":"<p>Stop me when this sounds familiar.<\/p>\n<p>Your laser welding system is not producing the quality welds you expected.<\/p>\n<p>You know what your laser\u2019s power density should be and where the laser should be focused, but you never know what it <em>actually <\/em>is, or where it\u2019s <em>really <\/em>focused.<!--more--><\/p>\n<p><strong>But measuring focus spot is easier said than done<\/strong><\/p>\n<p>It\u2019s isn\u2019t your fault, though.\u00a0 No beam profiler can measure such high power laser beams \u2013 at least not at the focus spot.<\/p>\n<p>However, if you can\u2019t measure your focus spot size and location, you may be doomed to scrap and slower production, not to mention all the time you\u2019ll waste trying to get the perfect laser setup by trial and error.<\/p>\n<p><strong>The Solution: Measure focus spot size and location <em>at any power<\/em><\/strong><\/p>\n<p>Luckily, there\u2019s a new solution.\u00a0 Ophir-Spiricon\u2019s BeamWatch measures focus spot size and location in real time.\u00a0 Better yet, there is no upper limit to the laser power that you can use with it.\u00a0 This unique solution measures Rayleigh scattering from the laser, without actually touching the laser beam at all.<\/p>\n<p><a href=\"\/blog\/wp-content\/uploads\/2014\/08\/BeamWatch-focus-spot-size-and-position-monitor.jpg\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-3879 lazyload\" title=\"BeamWatch focus spot size and position monitor\" data-src=\"\/blog\/wp-content\/uploads\/2014\/08\/BeamWatch-focus-spot-size-and-position-monitor.jpg\" alt=\"\" width=\"410\" height=\"352\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 410px; --smush-placeholder-aspect-ratio: 410\/352;\" \/><\/a><\/p>\n<p><span style=\"color: #000080;\"><em>BeamWatch focus spot size and position monitor<\/em><\/span><\/p>\n<p>BeamWatch has two unparalleled advantages:<\/p>\n<p>First, it measures your focus spot in real time (60 ms) so you can use it to diagnose the laser through its startup phase.\u00a0 Often the position of the laser focus spot shifts \u2013 especially during startup.\u00a0 Now you can actually see whether your focus spot location changes, and how much.<\/p>\n<p>The other thing that makes BeamWatch so unique is the laser power it can handle.\u00a0 Since the laser beam passes through a hole in the BeamWatch body without actually touching the sensor at all, there is no upper power limit.\u00a0 Currently, BeamWatch has been tested successfully up to 100\u00a0kW.\u00a0 It is expected to work at higher powers just as well.\u00a0 (It does have a lower limit: BeamWatch is only intended for lasers of 1 kW power or more.)<\/p>\n<p>Note: This solution is for YAG and fiber lasers with wavelengths from 980 to 1080 nm.\u00a0 So, if you\u2019re using a CO<sub>2<\/sub> laser I\u2019m afraid this isn\u2019t for you.\u00a0 Sorry.<\/p>\n<p><strong>Here\u2019s what you get with BeamWatch<\/strong><\/p>\n<p>As you can see in the rough diagram below, you measure the distance between your laser\u2019s output and BeamWatch, and BeamWatch calculates the precise location of the beam waist (or focus spot) of your laser.\u00a0 Use this value to position the laser so your focus spot will be at the best location with respect to your work piece.<\/p>\n<p><a href=\"\/blog\/wp-content\/uploads\/2014\/08\/BeamWatch-laser-focus-spot-size-measurements.jpg\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-3880 lazyload\" title=\"BeamWatch laser focus spot size measurements\" data-src=\"\/blog\/wp-content\/uploads\/2014\/08\/BeamWatch-laser-focus-spot-size-measurements.jpg\" alt=\"\" width=\"552\" height=\"287\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 552px; --smush-placeholder-aspect-ratio: 552\/287;\" \/><\/a><\/p>\n<p><span style=\"color: #000080;\"><em>BeamWatch laser focus spot size measurements<\/em><\/span><\/p>\n<p>At the same time, BeamWatch measures the laser beam width at the focus spot as well.\u00a0 This will help you determine your maximum power density, which should be directly related to the effectiveness and speed of your process.<\/p>\n<p>So here\u2019s the question that separates the amateurs from the professional laser welders.\u00a0 Now that there is a solution, do you invest in your laser welding system, in your process, to make it as efficient and cost-effective as possible?\u00a0 Or do you keep on playing trial and error?<\/p>\n<p>The choice is yours.<\/p>\n<p>What\u2019s it going to be?<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Stop me when this sounds familiar. Your laser welding system is not producing the quality welds you expected. You know [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":8596,"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":[3],"tags":[19,29],"ophirposttype":[349],"class_list":["post-3876","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-laser-beam-analysis","tag-beamwatch","tag-high-power","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>How to Increase Laser Welding Efficiency and Reduce Scrap - Ophir Photonics<\/title>\n<meta name=\"description\" content=\"Stop me when this sounds familiar. 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