通过聚焦圆偏振光获得的最小焦斑

IF 1.1 Q4 OPTICS

Computer Optics Pub Date : 2023-06-01 DOI:10.18287/2412-6179-co-1247

S. Stafeev, V. D. Zaitcev, V. Kotlyar

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引用次数: 1

摘要

本文利用Richards-Wolf方程，分析了平面衍射透镜对焦圆偏振光的问题。结果表明，随着透镜数值孔径的增大，焦斑尺寸先减小后增大。最小焦斑在光亮度=0.96 (FWHM=0.55λ)处观测到。随着透镜数值孔径的进一步增大，纵向分量的增大导致焦斑尺寸的增大。用消光透镜代替平面衍射透镜时，焦斑的大小随着透镜数值孔径的增大而单调减小。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Minimal focal spot obtained by focusing circularly polarized light

In this paper, using the Richards-Wolf equations, we analyze focusing circularly polarized light with flat diffractive lenses. It is shown that as the numerical aperture of the lens increases, the size of the focal spot first decreases and then begins to grow. The minimum focal spot is observed at NA=0.96 (FWHM=0.55λ). With a further increase in the numerical aperture of the lens, the growth of the longitudinal component leads to an increase in the size of the focal spot. When the flat diffractive lens is replaced by an aplanatic lens, the size of the focal spot decreases monotonically as the numerical aperture of the lens increases.

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来源期刊

Computer Optics OPTICS-

CiteScore

4.20

自引率

10.00%

发文量

审稿时长

9 weeks

期刊介绍： The journal is intended for researchers and specialists active in the following research areas: Diffractive Optics; Information Optical Technology; Nanophotonics and Optics of Nanostructures; Image Analysis & Understanding; Information Coding & Security; Earth Remote Sensing Technologies; Hyperspectral Data Analysis; Numerical Methods for Optics and Image Processing; Intelligent Video Analysis. The journal "Computer Optics" has been published since 1987. Published 6 issues per year.