中国激光, 2009, 36 (3): 732, 网络出版: 2009-03-17
散射诱导的多色高斯光束远场的光谱移动和光谱开关
Scattering-Induced Spectral Shifts and Spectral Switch of Polychromatic Gaussian Beams in Far Field
光谱学 奇点光学 散射诱导 多色高斯光束 光谱移动 光谱开关 spectroscopy singular optics scattering inducation polychromatic Gaussian beams spectral shift spectral switch
摘要
在静态散射的框架内,以高斯光束透过表面粗糙的绝缘板的远场谱强度为例,对散射诱导的光谱变化做了研究。前散射光的谱强度相对源光谱可能有红移和蓝移,某些条件下还会产生光谱开关。在影响散射光谱强度的诸参数中,板的厚度相对平均厚度的差值H参数起主要作用。当H=0时,归一化谱强度保持不变。散射诱导的多色高斯光束远场光谱开关属于“奇点光学”效应。
Abstract
Within the framework of static scattering, scattering-induced spectral changes in the forward-scattered component of polychromatic Gaussian beams transmitting through an insulating plate with rough surface are discussed. It is shown that the spectrum may be red-shifted and blue-shifted in comparison with the source spectrum, and the spectral switch may also take place. The H-parameter (the maximum deviation of the surface profile from the mean surface line) influences spectral behavior greatly. The spectrum remains unchanged if H=0. The phenomenon of scattering-induced spectral switches of polychromatic Gaussian beams in the far zone belongs to the effect in singular optics.
赵光普, 吕百达. 散射诱导的多色高斯光束远场的光谱移动和光谱开关[J]. 中国激光, 2009, 36(3): 732. Zhao Guangpu, Lü Baida. Scattering-Induced Spectral Shifts and Spectral Switch of Polychromatic Gaussian Beams in Far Field[J]. Chinese Journal of Lasers, 2009, 36(3): 732.