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Beam shaping in the high-energy kW-class laser system Bivoj at the HiLASE facility
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SYSNO ASEP 0579286 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Beam shaping in the high-energy kW-class laser system Bivoj at the HiLASE facility Author(s) Paliesek, Tomáš (FZU-D) ORCID
Navrátil, Petr (FZU-D) ORCID, RID
Pilař, Jan (FZU-D) RID, ORCID
Divoký, Martin (FZU-D) RID, ORCID
Smrž, Martin (FZU-D) RID, ORCID
Mocek, Tomáš (FZU-D) RID, ORCID, SAINumber of authors 6 Article number e79 Source Title High Power Laser Science and Engineering. - : Cambridge University Press - ISSN 2095-4719
Roč. 11, Sept (2023)Number of pages 9 s. Language eng - English Country GB - United Kingdom Keywords beam shaping ; high-average-power laser ; high-energy laser ; liquid crystal on silicon spatial light modulator ; wavefront shaping Subject RIV BH - Optics, Masers, Lasers OECD category Optics (including laser optics and quantum optics) Method of publishing Open access Institutional support FZU-D - RVO:68378271 UT WOS 001103702700001 EID SCOPUS 85174067115 DOI 10.1017/hpl.2023.79 Annotation A fully automatic fail-safe beam shaping system based on a liquid crystal on a silicon spatial light modulator has been implemented in the high-energy kilowatt-average-power nanosecond laser system Bivoj. The shaping system corrects for gain nonuniformity and wavefront aberrations of the front-end of the system. The beam intensity profile and the wavefront at the output of the front-end were successfully improved by shaping. The beam homogeneity defined by the beam quality parameters was improved two to three times. The root-mean-square value of the wavefront was improved more than 10 times. Consequently, the shaped beam from the second preamplifier led to improvement of the beam profile at the output of the first main cryo-amplifier. The shaping system is also capable of creating nonordinary beam shapes, imprinting cross-references into the beam, or masking certain parts of the beam. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2024 Electronic address https://hdl.handle.net/11104/0348139
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