Thermal lens effects on highly pumped Yb:glass

Akihiko Nishimura; Katsuaki Akaoka; Akira Ohzu; Akira Sugiyama; Tsutomu Usami; Tohru Matoba

doi:10.1117/12.380911

3 April 2000 Thermal lens effects on highly pumped Yb:glass

Akihiko Nishimura, Katsuaki Akaoka, Akira Ohzu, Akira Sugiyama, Tsutomu Usami, Tohru Matoba

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.

Citation Download Citation

Akihiko Nishimura, Katsuaki Akaoka, Akira Ohzu, Akira Sugiyama, Tsutomu Usami, and Tohru Matoba "Thermal lens effects on highly pumped Yb:glass", Proc. SPIE 3889, Advanced High-Power Lasers, (3 April 2000); https://doi.org/10.1117/12.380911

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