Small-Scale Self-Focusing of Intense Laser Beams In the Presence of Vector Effect
WEN Shuang-Chun, FAN Dian-Yuan
National Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
Small-Scale Self-Focusing of Intense Laser Beams In the Presence of Vector Effect
WEN Shuang-Chun;FAN Dian-Yuan
National Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
关键词 ：
42.65.Jx
Abstract ： We extend Bespalov-Talanov (B-T) theory on small-scale self-focusing (SSSF) to include vector effect of a very narrow intense laser beam with application of the vector self-focusing model. The gain spectrum for perturbations is obtained by using the standard linear instability analysis. It is shown that the influence on SSSF of vector effect is closely related to the beam width. For a very narrow beam, the role played by vector effect becomes significant, it reduces the fastest growing frequency and the maximum growth rate, and shortens the frequency range for perturbation growing, and thus deviates the gain spectrum from that of B-T theory.
Key words ：
42.65.Jx
出版日期: 2000-10-01
:
42.65.Jx
(Beam trapping, self-focusing and defocusing; self-phase modulation)
引用本文:
WEN Shuang-Chun;FAN Dian-Yuan. Small-Scale Self-Focusing of Intense Laser Beams In the Presence of Vector Effect[J]. 中国物理快报, 2000, 17(10): 731-733.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2000/V17/I10/731
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2000, Vol. 17 
