| 衍射效应诱导涡旋光束的偏振度变化 |
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| 引用本文： | 林惠川,蒲继雄.衍射效应诱导涡旋光束的偏振度变化[J].光子学报,2009,38(8). |
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| 作者姓名： | 林惠川 蒲继雄 |
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| 作者单位： | 华侨大学,信息科学与工程学院,福建,泉州,362021 |
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| 基金项目： | 福建省科技计划重点项目，福建省自然科学基金 |
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| 摘 要： | 基于惠更斯-菲涅耳衍射原理以及部分相干光的相干与偏振的统一理论,研究了衍射效应诱导部分相干涡旋光束的偏振度变化.通过理论分析与数值计算表明,部分相干涡旋光束经圆孔衍射后偏振度将发生变化,在衍射场中光束的偏振度分布情况与入射光束的相干度、入射光束的拓扑电荷数、衍射孔径的大小等因素有关.
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| 关 键 词： | 偏振度 部分相干涡旋光束 圆孔衍射 |
Change of Polarization of Vortex Beams Induced by Diffraction Effect |
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| LIN Hui-chuan,PU Ji-xiong.Change of Polarization of Vortex Beams Induced by Diffraction Effect[J].Acta Photonica Sinica,2009,38(8). |
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| Authors: | LIN Hui-chuan PU Ji-xiong |
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| Institution: | Department of Electronic Science & Technology;Huaqiao University;Quanzhou;Fujian 362021;China |
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| Abstract: | Based on the Huygens-Fresnel Principle and the unified theory of coherence and polarization of partailly coherent beams,the degree of polarization of partially coherent vortex beams transmitted through the circular aperture has been investigated.It is found that the degree of polarization will change after the beam transmitted through the circular aperture,and the degree of polarization of the diffractive beam is related with the coherence of source,the topological charges of the source,and the size of the ... |
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| Keywords: | Degree of polarization Partially coherent vortex beams Circular aperture diffraction |
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