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慧差对矢量偏振贝塞耳-高斯光束聚焦场的影响

, PP. 641-646

Keywords: 物理光学,贝塞耳-高斯光束,Richards-Wolf矢量衍射积分,径向偏振,方位角偏振,慧差

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Abstract:

利用Richards-Wolf矢量衍射积分公式,获得矢量偏振贝塞耳-高斯光束经具有初级慧差的高数值孔径系统聚焦后的三维光场复振幅函数,模拟了不同慧差系数下聚焦光场的纵向分布,以及焦平面和光轴上的光强。研究表明,初级慧差的存在导致矢量偏振贝塞耳-高斯光束的会聚光场发生偏移和变形,焦平面光强的分布和光轴上的光强峰值都受初级慧差和入射光偏振态的共同影响,偏振态和初级慧差不影响聚焦光场在光轴上的对称分布。

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