{"id":176535,"date":"2023-11-23T02:25:16","date_gmt":"2023-11-23T08:25:16","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2023\/11\/dynamic-z-scanning-for-ultrafast-auto-focusing-in-laser-processing"},"modified":"2023-11-23T02:25:16","modified_gmt":"2023-11-23T08:25:16","slug":"dynamic-z-scanning-for-ultrafast-auto-focusing-in-laser-processing","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2023\/11\/dynamic-z-scanning-for-ultrafast-auto-focusing-in-laser-processing","title":{"rendered":"Dynamic z-scanning for ultrafast auto-focusing in laser processing"},"content":{"rendered":"

<\/a><\/p>\n

In laser-based manufacturing, accommodating non-flat, or changing surfaces has traditionally been labor-intensive, involving complex focus mapping procedures and or ex-situ characterization. This often results in repositioning errors and extended processing times.<\/p>\n

To address these issues, ultra-high-speed auto-focusing in laser processing has been developed. Whereas most auto-focusing techniques still require the mechanical motion of a motorized stage. This mechanical movement in the beam<\/a> propagation axis can be significantly slower than the lateral speed, slowing down the process of surface<\/a> detection and re-alignment. Furthermore, it requires feedback, control, and sensing methods in order to determine the optical focal position.<\/p>\n

In a new paper published<\/a> in Light: Science & Applications<\/i>, a team of researchers, led by Professor Craig B. Arnold from the Department of Mechanical and Aerospace Engineering at Princeton University, U.S., developed a fast method to simultaneously track the specific location of a surface and adjust the focus of an optical system. They employed axial varifocal optics, specifically a TAG lens, which operates at 0.1\u22121 MHz, bypassing delays from the mechanical motion in the beam propagation direction.<\/p>\n","protected":false},"excerpt":{"rendered":"

In laser-based manufacturing, accommodating non-flat, or changing surfaces has traditionally been labor-intensive, involving complex focus mapping procedures and or ex-situ characterization. This often results in repositioning errors and extended processing times. To address these issues, ultra-high-speed auto-focusing in laser processing has been developed. Whereas most auto-focusing techniques still require the mechanical motion of a motorized [\u2026]<\/p>\n","protected":false},"author":427,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[38,1965,1491],"tags":[],"class_list":["post-176535","post","type-post","status-publish","format-standard","hentry","category-engineering","category-mapping","category-transportation"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/176535","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/427"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=176535"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/176535\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=176535"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=176535"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=176535"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}