中国物理B ›› 2012, Vol. 21 ›› Issue (7): 74205-074205.doi: 10.1088/1674-1056/21/7/074205

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

A new method for measuring the threshold of stimulated Brillouin scattering

朱学华a b, 吕志伟a b, 王雨雷a b   

  1. a National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology, Harbin 150080, China;
    b Institute of Opto-electronics, Harbin Institute of Technology, Harbin 150080, China
  • 收稿日期:2011-11-20 修回日期:2012-01-05 出版日期:2012-06-01 发布日期:2012-06-01
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61008005 and 61138005), the China Postdoctoral Science Special Foundation (Grant No. 201003428), and the Doctoral Fund of Ministry of Education of China (Grant No. 20102302120030).

A new method for measuring the threshold of stimulated Brillouin scattering

Zhu Xue-Hua(朱学华), LŰ Zhi-Wei(吕志伟)† and Wang Yu-Lei(王雨雷)   

  1. a National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology, Harbin 150080, China;
    b Institute of Opto-electronics, Harbin Institute of Technology, Harbin 150080, China
  • Received:2011-11-20 Revised:2012-01-05 Online:2012-06-01 Published:2012-06-01
  • Contact: Lü Zhi-Wei E-mail:zw_lu@sohu.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61008005 and 61138005), the China Postdoctoral Science Special Foundation (Grant No. 201003428), and the Doctoral Fund of Ministry of Education of China (Grant No. 20102302120030).

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摘要： A new method for measuring the threshold of stimulated Brillouin scattering (SBS) based on the generation location of Stokes beam is proposed for the first time to our knowledge. The length of the medium cell is selected to be longer than the free gain length of pump pulses in the Brillouin medium. The reflected light from a certain mirror in front of the medium cell is chosen as the reference beam, and the SBS threshold is measured by the ''jump'' of the delay between the Stokes beam and the reference beam. An 8-ns Q-switched single-longitudinal-mode pulse is used as the pump and the typical SBS medium FC-72 is selected as the nonlinear medium in our experiment. The SBS threshold intensity is measured to be 173--178 mW/cm2, which is consistent with existing results measured with the transmitted energy limiting method.

关键词: stimulated Brillouin scattering (SBS), threshold, amplified Brillouin scattering (ABS), delay

Abstract: A new method for measuring the threshold of stimulated Brillouin scattering (SBS) based on the generation location of Stokes beam is proposed for the first time to our knowledge. The length of the medium cell is selected to be longer than the free gain length of pump pulses in the Brillouin medium. The reflected light from a certain mirror in front of the medium cell is chosen as the reference beam, and the SBS threshold is measured by the ''jump'' of the delay between the Stokes beam and the reference beam. An 8-ns Q-switched single-longitudinal-mode pulse is used as the pump and the typical SBS medium FC-72 is selected as the nonlinear medium in our experiment. The SBS threshold intensity is measured to be 173--178 mW/cm2, which is consistent with existing results measured with the transmitted energy limiting method.

Key words: stimulated Brillouin scattering (SBS), threshold, amplified Brillouin scattering (ABS), delay

中图分类号:  (Nonlinear optics)

  • 42.65.-k
42.65.Es (Stimulated Brillouin and Rayleigh scattering)