硬边光阑对多色矢量光束光谱开关的影响  

Influence of hard-edge aperture on the spectral switch of polychromatic vector beams

作　　者：赵光普[1] 吕百达[2] 

机构地区：[1]宜宾学院光电信息研究所,宜宾644007 [2]四川大学激光物理与化学研究所,成都610041

出　　处：《激光技术》2006年第2期142-144,147,共4页Laser Technology

基　　金：四川省教育厅重点项目基金资助项目(2003A166)

摘　　要：从偏振矩阵和交叉谱密度传输公式出发,分析了硬边光阑对多色矢量高斯-谢尔模型光束轴上光谱开关的影响。结果表明,插入偏振片前,光谱开关的光谱跃迁量Δ随截断参数δ的增加而减少,光谱极小值Sm in和位置zc/z0随δ的增加而增大。插入偏振片后,光谱开关随δ的变化规律与插入偏振片前的变化规律相同。但偏振片的旋转角度θ会对出现光谱开关的δ的范围产生影响。Starting from the polarization matrix and propagation equation of the cross-spectral density matrix, a detailed study of the influence of hard-edge aperture on the spectral switch of polychromatic vector Gaussian-ScheU model beams is performed. It is shown that before inserting a polarizer the transition height △ of the spectral switch decreases, the minimum Smin, and the critical, position zc/z0 increase as the truncation parameter 6 increases. Alter inserting the polarizer, the spectral switch varies with the tnmcation parameter 8 in a similar way as the case without the polarizer. However,the polarization angle 0 affects the range of the truncation parameter 8 at which the spectral switch appears.

关 键 词：现代光学 硬边光阑 多色矢量光束 光谱开关 

分 类 号：TN012[电子电信—物理电子学]