中国物理B ›› 2009, Vol. 18 ›› Issue (7): 2835-2838.doi: 10.1088/1674-1056/18/7/035

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Investigation on the effect of beam divergence angle upon output waveform based on stimulated Brillouin scattering optical limiting

哈斯乌力吉, 鲁欢欢, 公胜, 付美玲, 吕志伟, 林殿阳, 何伟明   

  1. Institute of Opto-electronics, Harbin Institute of Technology, Harbin 150001, China
  • 收稿日期:2008-12-09 修回日期:2008-12-24 出版日期:2009-07-20 发布日期:2009-07-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos 60778019 and 60878005), the Program for New Century Excellent Talents in University of China (Grant No NCET-08-0173) and the Program of Excellent Team in Harbin Institute of Technology of China.

Investigation on the effect of beam divergence angle upon output waveform based on stimulated Brillouin scattering optical limiting

Hasi Wu-Li-Ji(哈斯乌力吉), Lu Huan-Huan(鲁欢欢), Gong Sheng(公胜), Fu Mei-Ling(付美玲), ü Zhi-Wei(吕志伟)†, Lin Dian-Yang(林殿阳), and He Wei-Ming(何伟明)   

  1. Institute of Opto-electronics, Harbin Institute of Technology, Harbin 150001, China
  • Received:2008-12-09 Revised:2008-12-24 Online:2009-07-20 Published:2009-07-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos 60778019 and 60878005), the Program for New Century Excellent Talents in University of China (Grant No NCET-08-0173) and the Program of Excellent Team in Harbin Institute of Technology of China.

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摘要： This paper investigates the effect of beam divergence angle on output waveform based on stimulated Brillouin scattering optical limiting. Output waveforms in the case of different pump divergence angles are numerically simulated, and validated in a Nd:YAG seed-injected laser system. The results indicate that a small pump divergence angle can lead to good interaction between pump and Stokes, and a platform can be easily realized in the transmitted waveform. In contrast, a peak followed by the platform appears when the divergence angle becomes large.

Abstract: This paper investigates the effect of beam divergence angle on output waveform based on stimulated Brillouin scattering optical limiting. Output waveforms in the case of different pump divergence angles are numerically simulated, and validated in a Nd:YAG seed-injected laser system. The results indicate that a small pump divergence angle can lead to good interaction between pump and Stokes, and a platform can be easily realized in the transmitted waveform. In contrast, a peak followed by the platform appears when the divergence angle becomes large.

Key words: stimulated Brillouin scattering, optical limiting, waveform, beam divergence angle

中图分类号:  (Stimulated Brillouin and Rayleigh scattering)

  • 42.65.Es
42.79.-e (Optical elements, devices, and systems) 42.55.Rz (Doped-insulator lasers and other solid state lasers) 42.60.By (Design of specific laser systems) 42.70.Hj (Laser materials)