26 February 2013 In-situ optical phase distortion measurement of Yb:YAG thin disk in high average power regenerative amplifier
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Abstract
We are developing one kilohertz picosecond Yb:YAG thin disk regenerative amplifier with 500-W average power for medical and industrial applications. In case of high energy pulse amplification, a large area mode matching in gain media, which is drastically degenerated by the optical phase distortion, is required to avoid optical damage. We designed in-situ thin disk deformation measurement based on the combination of a precise wavefront sensor and a single mode probe beam. In contrast to a conventional interferometric measurement, this measurement is compact, easy-to-align, and is less affected by mechanical vibrations.
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Taisuke Miura, Taisuke Miura, Michal Chyla, Michal Chyla, Martin Smrž, Martin Smrž, Siva Sankar Nagisetty, Siva Sankar Nagisetty, Patricie Severová, Patricie Severová, Ondřej Novák, Ondřej Novák, Akira Endo, Akira Endo, Tomáš Mocek, Tomáš Mocek, } "In-situ optical phase distortion measurement of Yb:YAG thin disk in high average power regenerative amplifier", Proc. SPIE 8603, High-Power Laser Materials Processing: Lasers, Beam Delivery, Diagnostics, and Applications II, 860303 (26 February 2013); doi: 10.1117/12.2004496; https://doi.org/10.1117/12.2004496
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