中国物理B ›› 2012, Vol. 21 ›› Issue (1): 14210-014210.doi: 10.1088/1674-1056/21/1/014210

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Optical terminal analysis of a multigrating tiled compressor in a PW-class CPA-laser

罗晖1, 杨雨川2, 王逍3, 李富全3, 黄小军3, 景峰3   

  1. (1)College of Optoelectric Science and Engineering, National University of Defense Technology, Changsha 410073, China; (2)College of Optoelectric Science and Engineering, National University of Defense Technology, Changsha 410073, China; Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China; (3)Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China
  • 收稿日期:2011-04-06 修回日期:2011-07-05 出版日期:2012-01-15 发布日期:2012-01-20
  • 基金资助:
    Project supported by the National High Technology Research and Development Program of China (Grant No. 2009AA8044005).

Optical terminal analysis of a multigrating tiled compressor in a PW-class CPA-laser

Yang Yu-Chuan(杨雨川)a)b)†, Luo Hui(罗晖)a), Wang Xiao(王逍)b), Li Fu-Quan(李富全)b), Huang Xiao-Jun(黄小军)b), and Jing Feng(景峰)b)   

  1. a College of Optoelectric Science and Engineering, National University of Defense Technology, Changsha 410073, China; b Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China
  • Received:2011-04-06 Revised:2011-07-05 Online:2012-01-15 Published:2012-01-20
  • Supported by:
    Project supported by the National High Technology Research and Development Program of China (Grant No. 2009AA8044005).

摘要: In the highest-power chirped-pulse amplification lasers, the pulse must be stretched in time, amplified, compressed in a grating compressor and subsequently focused by off-axis parabola to obtain a high peak power. In the optical terminal, the temporal and spatial effects of mismatched multigrating tiled compressor on the far-field pulse are critical factors to be analysed. In this paper, a k-space raytracing model is proposed for the temporal and spatial analyses of possible errors in a four-grating single-pass tiled compressor. The results show that the last grating affects mainly the partial focal spot, while the middle two gratings affect the temporal waveform, and the partial focal spot needs much higher error control than that in the temporal domain in a picosecond pulse compression.

关键词: high-power chirped-pulse amplification lasers, optical terminal, multigrating tiled compressor, off-axis parabola

Abstract: In the highest-power chirped-pulse amplification lasers, the pulse must be stretched in time, amplified, compressed in a grating compressor and subsequently focused by off-axis parabola to obtain a high peak power. In the optical terminal, the temporal and spatial effects of mismatched multigrating tiled compressor on the far-field pulse are critical factors to be analysed. In this paper, a k-space raytracing model is proposed for the temporal and spatial analyses of possible errors in a four-grating single-pass tiled compressor. The results show that the last grating affects mainly the partial focal spot, while the middle two gratings affect the temporal waveform, and the partial focal spot needs much higher error control than that in the temporal domain in a picosecond pulse compression.

Key words: high-power chirped-pulse amplification lasers, optical terminal, multigrating tiled compressor, off-axis parabola

中图分类号:  (Ultrafast processes; optical pulse generation and pulse compression)

  • 42.65.Re
42.79.Dj (Gratings)