3 April 2000 Thermal lens effects on highly pumped Yb:glass
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Proceedings Volume 3889, Advanced High-Power Lasers; (2000) https://doi.org/10.1117/12.380911
Event: Advanced High-Power Lasers and Applications, 1999, Osaka, Japan
Abstract
Thermal lens effects on highly pumped Yb doped phosphate glass was measured by a Shack-Hartmann wavefront sensor for the development of compact chirped pulse amplification systems. High energy pump pulses of 1 - 2 Joules were produced by a flashlamp pumped Ti-sapphire laser. The pumping intensity on the Yb:glass surface exceeded 800 kW/cm2. The pulse energy of 330 mJ from Yb:glass was obtained with 53% slope efficiency with 0.5 Hz reputation. The absorbed pump energy generated the thermal lens effects inside the Yb:glass. The wavefront distortion completely disappeared after 300 ms of pump pulse. Neither heat accumulation nor pumping damage was observed on the Yb:glass.
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Akihiko Nishimura, Akihiko Nishimura, Katsuaki Akaoka, Katsuaki Akaoka, Akira Ohzu, Akira Ohzu, Akira Sugiyama, Akira Sugiyama, Tsutomu Usami, Tsutomu Usami, Tohru Matoba, Tohru Matoba, "Thermal lens effects on highly pumped Yb:glass", Proc. SPIE 3889, Advanced High-Power Lasers, (3 April 2000); doi: 10.1117/12.380911; https://doi.org/10.1117/12.380911
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