透镜焦点区域的偏振度。
Degree of polarization in the focal region of a lens.
作者信息
Zhao Xinying, Visser Taco D, Agrawal Govind P
出版信息
J Opt Soc Am A Opt Image Sci Vis. 2018 Sep 1;35(9):1518-1522. doi: 10.1364/JOSAA.35.001518.
PMID:30183005
Abstract
We examine the 3D distribution of the degree of polarization (DOP) in the focal region of a thin paraxial lens. Analytic expressions for the case of a focused Gaussian-Schell model beam are derived. These show that the DOP satisfies certain spatial symmetry relations. Furthermore, its value varies strongly in the vicinity of the geometrical focus, and its maximum, which need not occur at the focus, can be significantly higher than that of the incident beam.
摘要
我们研究了薄傍轴透镜焦区内偏振度（DOP）的三维分布。推导了聚焦高斯 - 谢尔模型光束情况下的解析表达式。这些表达式表明，偏振度满足某些空间对称关系。此外，其值在几何焦点附近变化很大，并且其最大值（不一定出现在焦点处）可能明显高于入射光束的偏振度最大值。
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