论文标题
光谱电磁高斯Schell模型光束的极化程度通过2-F和4-F透镜系统
Degree of polarization of a spectral electromagnetic Gaussian Schell-model beam passing through 2-f and 4-f lens systems
论文作者
论文摘要
光谱电磁高斯Schell-Model（SEGSM）梁是具有具有光谱依赖性参数的高斯Schell模型光束的概括，该模型为随机电磁宽广泛统计固定式横梁样磁场提供了基本的经典模型。我们研究经过2-F和4-F透镜系统的SEGSM光束的极化度（DOP）。可以观察到，对于2-F镜头系统，镜头的背面焦平面的光谱DOP相对于视轴的横向位置以及梁的光谱参数发生了变化。对于4-F镜头系统，背面焦平面上的光谱DOP与光束的横向位置无关，而它取决于梁参数，例如RMS梁宽度的平均值，相关函数的RMS宽度以及放置在镜头系统傅立叶平面上的光圈大小。
Spectral electromagnetic Gaussian Schell-model (SEGSM) beam is a generalization of Gaussian Schell model beam having parameters with spectral dependence, which offers a basic classical model for random electromagnetic wide-sense statistically stationary beam-like fields. We study degree of polarization (DOP) of a SEGSM beam passing through 2-f and 4-f lens systems. It is observed that for a 2-f lens system, the spectral DOP at the back focal plane of the lens changes with respect to the transverse position from the optic axis, and the spectral parameters of the beam. For a 4-f lens system, the spectral DOP at the back focal plane is independent of the transverse position of the beam, whereas it depends on the beam parameters such as mean value of rms beam-width, rms width of correlation function, and size of aperture placed at the Fourier plane of the lens system.
