中国物理B ›› 2008, Vol. 17 ›› Issue (5): 1840-1844.doi: 10.1088/1674-1056/17/5/048

• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇    下一篇

Design of phase plates for shaping partially coherent beams by simulated annealing

李建龙, 吕百达   

  1. Institute of Laser Physics and Chemistry, Sichuan University, Chengdu 610064, China
  • 收稿日期:2007-05-10 修回日期:2007-09-14 出版日期:2008-05-20 发布日期:2008-05-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10574097).

Design of phase plates for shaping partially coherent beams by simulated annealing

Li Jian-Long(李建龙)† and LüBai-Da(吕百达)‡   

  1. Institute of Laser Physics and Chemistry, Sichuan University, Chengdu 610064, China
  • Received:2007-05-10 Revised:2007-09-14 Online:2008-05-20 Published:2008-05-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10574097).

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摘要： Taking the Gaussian Schell-model beam as a typical example of partially coherent beams, this paper applies the simulated annealing (SA) algorithm to the design of phase plates for shaping partially coherent beams. A flow diagram is presented to illustrate the procedure of phase optimization by the SA algorithm. Numerical examples demonstrate the advantages of the SA algorithm in shaping partially coherent beams. An uniform flat-topped beam profile with maximum reconstruction error RE<1.74% is achieved. A further extension of the approach is discussed.

Abstract: Taking the Gaussian Schell-model beam as a typical example of partially coherent beams, this paper applies the simulated annealing (SA) algorithm to the design of phase plates for shaping partially coherent beams. A flow diagram is presented to illustrate the procedure of phase optimization by the SA algorithm. Numerical examples demonstrate the advantages of the SA algorithm in shaping partially coherent beams. An uniform flat-topped beam profile with maximum reconstruction error RE<1.74% is achieved. A further extension of the approach is discussed.

Key words: partially coherent beam, phase plate, simulated annealing (SA), beam shaping

中图分类号:  (Beam characteristics: profile, intensity, and power; spatial pattern formation)

  • 42.60.Jf
41.85.Ct (Particle beam shaping, beam splitting)