Optical diffraction patterns and almost-holograms made with a MOPA laser engraving machine

Optical diffraction patterns and almost-holograms made with a MOPA laser engraving machine https://tube.loping.net/videos/watch/7f292659-3b71-48cf-aa41-12a41435b499 I use a Cloudray MOPA fiber laser to make diffraction gratings, multi-color images from bitmaps, and almost-holograms on stainless steel sheets. I inspect the gratings with an electron microscope, and also create images made from diffraction grating "pixels" where each pixel has controllable pitch and angle. Machine featured in the video: Cloudray GM-100 NEO — https://www.cloudraylaser.com/products/cloudray-litemarker-gm-series-neo-100w-autofocus-mopa-fiber-laser-engraver-with-built-in-camera https://github.com/benkrasnow/MOPA_Laser_Stainless_Colors https://github.com/benkrasnow/MOPA_Laser_Diffraction_Gratings Some interesting parallels to abrasion holograms. http://amasci.com/amateur/holo3.html Laser induced periodic structuring (with a polarized beam) https://www.mdpi.com/2079-4991/10/10/1950 https://www.patreon.com/c/AppliedScience Sun, 12 Jul 2026 11:07:04 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://tube.loping.net Optical diffraction patterns and almost-holograms made with a MOPA laser engraving machine https://tube.loping.net/lazy-static/avatars/8a56e488-2120-4649-a417-badf5893657b.png https://tube.loping.net/videos/watch/7f292659-3b71-48cf-aa41-12a41435b499 All rights reserved, unless otherwise specified in the terms specified at https://tube.loping.net/about and potential licenses granted by each content's rightholder.