中国物理B ›› 2015, Vol. 24 ›› Issue (9): 94210-094210.doi: 10.1088/1674-1056/24/9/094210

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Small-scale self-focusing of 200 ps laser pulses in Brillouin amplification

远航, 王雨雷, 吕志伟, 郑振兴   

  1. National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology, Harbin 150080, China
  • 收稿日期:2014-12-18 修回日期:2015-04-29 出版日期:2015-09-05 发布日期:2015-09-05
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61378007 and 61138005) and the Fundamental Research Funds for the Central Universities, China (Grant No. HIT. IBRSEM. A. 201409).

Small-scale self-focusing of 200 ps laser pulses in Brillouin amplification

Yuan Hang (远航), Wang Yu-Lei (王雨雷), Lü Zhi-Wei (吕志伟), Zheng Zhen-Xing (郑振兴)   

  1. National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology, Harbin 150080, China
  • Received:2014-12-18 Revised:2015-04-29 Online:2015-09-05 Published:2015-09-05
  • Contact: Wang Yu-Lei, Lü Zhi-Wei E-mail:wyl@hit.edu.cn;zw_lu@sohu.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61378007 and 61138005) and the Fundamental Research Funds for the Central Universities, China (Grant No. HIT. IBRSEM. A. 201409).

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摘要： Brillouin amplification is a new method to obtain high power hundred-picosecond laser pulses for shock ignition. The laser pulse's intensity can be amplified to 10 GW/cm2 through this method. In order to determine the near-field quality, the relationship between the Brillouin amplification gain and the B integral in the stimulated Brillouin scattering (SBS) energy transfer process was studied, and numerical simulations and calculations were carried out to explain the process. For achieving an output intensity of 10 GW/cm2 under the condition that the effect of small-scale self-focusing is insignificant in the Brillouin amplification, the influence of the configuration parameters on the Brillouin amplification and the B integral was investigated. The results showed that the 10 GW/cm2 high power output can be obtained by optimizing the intensities of the pump and Stokes light and choosing an appropriate SBS medium.

关键词: Brillouin amplification, super transient theory, B integral

Abstract: Brillouin amplification is a new method to obtain high power hundred-picosecond laser pulses for shock ignition. The laser pulse's intensity can be amplified to 10 GW/cm2 through this method. In order to determine the near-field quality, the relationship between the Brillouin amplification gain and the B integral in the stimulated Brillouin scattering (SBS) energy transfer process was studied, and numerical simulations and calculations were carried out to explain the process. For achieving an output intensity of 10 GW/cm2 under the condition that the effect of small-scale self-focusing is insignificant in the Brillouin amplification, the influence of the configuration parameters on the Brillouin amplification and the B integral was investigated. The results showed that the 10 GW/cm2 high power output can be obtained by optimizing the intensities of the pump and Stokes light and choosing an appropriate SBS medium.

Key words: Brillouin amplification, super transient theory, B integral

中图分类号:  (Nonlinear optics)

  • 42.65.-k
42.65.Es (Stimulated Brillouin and Rayleigh scattering) 42.65.Jx (Beam trapping, self-focusing and defocusing; self-phase modulation)