Efficient spherical wavefront correction near the focus of the petawatt-level femtosecond CPA laser system

Zhijun Ren; Xiaoyan Liang; Lianghong Yu; Xiaoming Lu; Ruxin Li; Zhizhan Xu

doi:10.1117/12.874621

18 February 2011 Efficient spherical wavefront correction near the focus of the petawatt-level femtosecond CPA laser system

Zhijun Ren, Xiaoyan Liang, Lianghong Yu, Xiaoming Lu, Ruxin Li, Zhizhan Xu

Author Affiliations +

Proceedings Volume 7916, High Power Lasers for Fusion Research; 791611 (2011) https://doi.org/10.1117/12.874621
Event: SPIE LASE, 2011, San Francisco, California, United States

Abstract

By directly measuring the spherical wavefront near the focus, we demonstrated a approach to efficiently correct convergent spherical wavefront by installing a common small aperture deformable mirror (DM) in the middle of 0.89PW/29.0fs Ti:sapphire CPA laser chain. It is, to our knowledge, the first time attain the near perfect correction result in ultra-intensity laser system by correcting convergent spherical wavefront using a small aperture DM in adaptive optical loop. Finally the maximum peak intensity of 2.59×10^21 W/cm2 was obtained with an f/4 off-axis parabola at the output power of 0.89 PW.

Citation Download Citation

Zhijun Ren, Xiaoyan Liang, Lianghong Yu, Xiaoming Lu, Ruxin Li, and Zhizhan Xu "Efficient spherical wavefront correction near the focus of the petawatt-level femtosecond CPA laser system", Proc. SPIE 7916, High Power Lasers for Fusion Research, 791611 (18 February 2011); https://doi.org/10.1117/12.874621

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