Here is a page to introduce「Gauss- to-Top Hat beam shaper lenses,Laser Beam Shapers」- Tokyo Instruments, Inc.
Top Hat Beam Shaper, Square Top Hat Spot
Convert Gaussian into a Top Hat Shapeoptics Technologies Holdings
A compact polarization insensitive all-dielectric metasurface lens for Gaussian to tophat beam shaping in sub-terahertz regime - ScienceDirect
Illustration of a laser beam shaping system based on two plano-aspheric
flat-top beams, explained by RP; top-hat beam, supergaussian, intensity profile, beam shaper
Beam shaping technology and its application in metal laser additive manufacturing: A review - ScienceDirect
How to design a Gaussian to Top Hat beam shaper – Knowledgebase
PDF) Gauss to top-hat beam shaping with aspheres
Osela inc. - Expertise - Optical design for beam shaping
Why Use a Flat Top Laser Beam?
Beam Shaping
