环形和反向光通量的锐利焦点

2019 IEEE 8th International Conference on Advanced Optoelectronics and Lasers (CAOL) Pub Date : 2019-09-01 DOI:10.1109/CAOL46282.2019.9019574

V. Kotlyar, S. Stafeev, A. Kovalev

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引用次数: 0

摘要

我们得到了一组完整描述具有双高阶奇点(相位和偏振)的光场及其在焦点附近的强度和能量通量分布的显式解析表达式。在焦点附近的光轴上存在一个反向能量通量，其大小与正向能量通量相当。波印亭矢量纵向分量分布中，在暗环附近的焦点区域存在一个环形能量通量。

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Toroidal and reverse flux of light in the sharp focus

We obtain a set of explicit analytical expressions that completely describe a light field with a double higher-order singularity (phase and polarization), as well as distributions of its intensity and energy flux near the focus.There is a reverse energy flux on the optical axis near the focus, which is comparable in magnitude with the forward flux. There is a toroidal energy flux in the focal area near the dark rings in the distribution of the longitudinal component of the Poynting vector.

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2019 IEEE 8th International Conference on Advanced Optoelectronics and Lasers (CAOL)

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