From Event: SPIE Optical Engineering + Applications, 2016
The demand for a uniform intensity distribution of working laser beams (top-hat beam) is growing steadily, especially in the field of laser material processing. Therefore, a refractive beam-shaping system that transforms a collimated Gaussian beam into a collimated top-hat beam was developed. As a result, a compact optical design was derived, which has a very high optical performance and is suitable for series production. Additionally, it can be combined with existing monolithic beam expanders from asphericon GmbH to achieve modular top-hat generation. A characterization of the system performance was carried out. The results of the design and the characterization will be presented.
A. Möhl, S. Wickenhagen, and U. Fuchs, "Insensitive and modular gauss to top-hat beam shaping with aspheres," Proc. SPIE 9950, Laser Beam Shaping XVII, 995005 (Presented at SPIE Optical Engineering + Applications: August 29, 2016; Published: 27 September 2016); https://doi.org/10.1117/12.2236140.
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