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Proceedings Paper

Efficient spherical wavefront correction near the focus of the petawatt-level femtosecond CPA laser system
Author(s): Zhijun Ren; Xiaoyan Liang; Lianghong Yu; Xiaoming Lu; Ruxin Li; Zhizhan Xu
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Paper 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.

Paper Details

Date Published: 19 February 2011
PDF: 6 pages
Proc. SPIE 7916, High Power Lasers for Fusion Research, 791611 (19 February 2011); doi: 10.1117/12.874621
Show Author Affiliations
Zhijun Ren, Shanghai Institute of Optics and Fine Mechanics (China)
Graduate Univ. of the Chinese Academy of Sciences (China)
Xiaoyan Liang, Shanghai Institute of Optics and Fine Mechanics (China)
Lianghong Yu, Shanghai Institute of Optics and Fine Mechanics (China)
Graduate Univ. of the Chinese Academy of Sciences (China)
Xiaoming Lu, Shanghai Institute of Optics and Fine Mechanics (China)
Ruxin Li, Shanghai Institute of Optics and Fine Mechanics (China)
Zhizhan Xu, Shanghai Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 7916:
High Power Lasers for Fusion Research
Abdul A. S. Awwal; A. Mike Dunne; Hiroshi Azechi; Brian E. Kruschwitz, Editor(s)

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