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18 December 2024 Development of VUV FEL mirrors and study of damage resistance
Leif Kochanneck, Morten Steinecke, Eric Martin, Stepan Mikhailov, Ying K. Wu, Andreas Wienke
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Proceedings Volume PC13190, Laser-Induced Damage in Optical Materials 2024; PC131900O (2024) https://doi.org/10.1117/12.3033011
Event: SPIE Laser Damage, 2024, San Ramon, CA, United States
Abstract
Storage Ring FELs are one of the primary sources for circularly polarized γ-radiation in various experiments. The achievable energy of this γ-radiation is strongly related to the central wavelength of the UV wavelengths in the FEL. This lasing wavelength, in turn, is determined by the VUV-resonator mirrors, which face a unique set of requirements, including high reflectivity of 94% for a protected system and low losses at a wavelength of 155 nm and below, as well as resistance to intense VUV and γ-radiation. The contribution will show the manufacturing, laser damage caused in the FEL, and damage mitigation strategies.
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Leif Kochanneck, Morten Steinecke, Eric Martin, Stepan Mikhailov, Ying K. Wu, and Andreas Wienke "Development of VUV FEL mirrors and study of damage resistance", Proc. SPIE PC13190, Laser-Induced Damage in Optical Materials 2024, PC131900O (18 December 2024); https://doi.org/10.1117/12.3033011
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KEYWORDS
Free electron lasers
Mirrors
Resistance
Vacuum ultraviolet
Coating
Manufacturing
Laser radiation
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