中国物理B ›› 2003, Vol. 12 ›› Issue (9): 981-985.doi: 10.1088/1009-1963/12/9/310

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Mode correlation and coherent-mode decomposition of laser beams

张彬, 文侨, 楚晓亮   

  1. College of Electronic Information, Sichuan University, Chengdu 610064, China
  • 收稿日期:2003-04-22 修回日期:2003-01-02 出版日期:2003-09-16 发布日期:2005-03-16
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 60108004).

Mode correlation and coherent-mode decomposition of laser beams

Zhang Bin (张彬), Wen Qiao (文侨), Chu Xiao-Liang (楚晓亮)   

  1. College of Electronic Information, Sichuan University, Chengdu 610064, China
  • Received:2003-04-22 Revised:2003-01-02 Online:2003-09-16 Published:2005-03-16
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 60108004).

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摘要： Theory of the coherent-mode decomposition of laser beams is proposed. The new model for the flat-topped beams proposed by Li recently is taken as an example. The analytical expressions for the M^2-factor and mode coherence coefficients of flat-topped beams have been derived in the rectangular coordinate system, by means of which the mode correlation, mode structure, and coherent-mode decomposition of flat-topped beams can be analysed.

Abstract: Theory of the coherent-mode decomposition of laser beams is proposed. The new model for the flat-topped beams proposed by Li recently is taken as an example. The analytical expressions for the $M^2$-factor and mode coherence coefficients of flat-topped beams have been derived in the rectangular coordinate system, by means of which the mode correlation, mode structure, and coherent-mode decomposition of flat-topped beams can be analysed.

Key words: coherent-mode decomposition, $M^2$-factor, mode coherence coefficients (MCCs), flattopped beams

中图分类号:  (General laser theory)

  • 42.55.Ah
42.60.Jf (Beam characteristics: profile, intensity, and power; spatial pattern formation)