径向偏振聚焦光束共聚焦显微镜术
Confocal microscopy with a radially polarized focused beam.
作者信息
Meng Peiwen, Pereira Silvania, Urbach Paul
出版信息
Opt Express. 2018 Nov 12;26(23):29600-29613. doi: 10.1364/OE.26.029600.
PMID:30469922
Abstract
Rigorous vectorial focusing theory is used to study the imaging of small adjacent particles with a confocal laser scanning system. We consider radially polarized illumination with an optimized amplitude distribution and an annular lens to obtain a narrower distribution of the longitudinal component of the field in focus. A polarization convertor at the detector side is added to transform radial polarization to linear polarization in order to make the signal detectable with a single mode fiber.
摘要
采用严格的矢量聚焦理论来研究共焦激光扫描系统对相邻小颗粒的成像。我们考虑具有优化幅度分布的径向偏振照明和一个环形透镜，以在焦点处获得更窄的场纵向分量分布。在探测器一侧添加一个偏振转换器，将径向偏振转换为线性偏振，以便能用单模光纤检测信号。
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