中国物理B ›› 2004, Vol. 13 ›› Issue (12): 2064-2070.doi: 10.1088/1009-1963/13/12/015

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Effect of astigmatism on spectral switches of partially coherent beams

吕百达1, 赵光普2, 肖希2   

  1. (1)Institute of Laser Physics and Chemistry, Sichuan University, Chengdu 610064, China; (2)Institute of Optoelectronic Information, Yibin University, Yibin 644007, China; Institute of Laser Physics and Chemistry, Sichuan University, Chengdu 610064, China
  • 收稿日期:2004-04-22 修回日期:2004-05-22 出版日期:2004-12-17 发布日期:2005-03-17
  • 基金资助:
    Project supported by the Foundation of Education Commission of Sichuan Province, China (Grant No 2003A166).

Effect of astigmatism on spectral switches of partially coherent beams

Zhao Guang-Pu(赵光普)ab, Xiao Xi (肖希)ab, Lü Bai-Da (吕百达)b    

  1. a Institute of Optoelectronic Information, Yibin University, Yibin 644007, China; b Institute of Laser Physics and Chemistry, Sichuan University, Chengdu 610064, China
  • Received:2004-04-22 Revised:2004-05-22 Online:2004-12-17 Published:2005-03-17
  • Supported by:
    Project supported by the Foundation of Education Commission of Sichuan Province, China (Grant No 2003A166).

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摘要： A detailed study of the spectrum of partially coherent beams diffracted at an astigmatic aperture lens is performed. Considerable attention is paid to the effect of astigmatism on spectral switches of polychromatic Gaussian Schell-model beams. It is shown that the spectral switch can also take place in the vicinity of intensity minimum in a geometrical focal plane for the astigmatic case, but the astigmatism of the lens and the spatial correlation of the beam affect the critical position u_c, spectral minimum S_{min}, and transition height Δ of spectral switches.

关键词: modern optics, spectral switch, astigmatic lens, aperture, polychromatic Gaussian Schell-model (GSM) beam

Abstract: A detailed study of the spectrum of partially coherent beams diffracted at an astigmatic aperture lens is performed. Considerable attention is paid to the effect of astigmatism on spectral switches of polychromatic Gaussian Schell-model beams. It is shown that the spectral switch can also take place in the vicinity of intensity minimum in a geometrical focal plane for the astigmatic case, but the astigmatism of the lens and the spatial correlation of the beam affect the critical position $u_{\rm c}$, spectral minimum $S_{\rm min}$, and transition height Δ of spectral switches.

Key words: modern optics, spectral switch, astigmatic lens, aperture, polychromatic Gaussian Schell-model (GSM) beam

中图分类号:  (Aberrations)

  • 42.15.Fr
42.79.Bh (Lenses, prisms and mirrors) 42.25.Fx (Diffraction and scattering) 42.25.Kb (Coherence)