Decay of Polarization Singularities of an Erf-Gaussian Beam Due to External Perturbations

IF 1 Q4 OPTICS
Yu. Egorov, A. Rubass, V. Guseva
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引用次数: 0

Abstract

This article is devoted to a new direction of modern singular optics—Erf-Gaussian (EG) beams that carry a fractional topological charge. It is shown that Erf-Gaussian beams were generated using an axicon and an anisotropic crystal, and the polarization characteristics of these beams with a fractional topological charge in the vicinity of the beam axis were experimentally studied. Theoretical calculations were confirmed and it was shown that Erf-Gaussian beams introduce changes into the original picture of the polarization distribution, and that the central spiral polarization umbilical splits into two polarization features of the “lemon” type. The method described in the article for generating and analyzing polarization singularity in Erf-Gaussian beams based on a fractional topological charge can be used in optical profilometry to analyze the polarization and phase properties of materials and surface roughness.

Abstract Image

外部扰动对erf -高斯光束偏振奇点衰减的影响
本文讨论了现代奇异光学的一个新方向——带有分数拓扑电荷的erf - gaussian光束。结果表明,利用轴向晶体和各向异性晶体产生了erf -高斯光束,并实验研究了轴向附近带分数拓扑电荷的光束的偏振特性。理论计算证实了Erf-Gaussian光束对原偏振分布图景的改变,中心螺旋极化脐带分裂为两个“柠檬”型极化特征。本文所描述的基于分数阶拓扑电荷的erf -高斯光束偏振奇点的产生和分析方法,可用于光学轮廓学中分析材料的偏振和相位特性以及表面粗糙度。
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来源期刊
CiteScore
1.50
自引率
11.10%
发文量
25
期刊介绍: The journal covers a wide range of issues in information optics such as optical memory, mechanisms for optical data recording and processing, photosensitive materials, optical, optoelectronic and holographic nanostructures, and many other related topics. Papers on memory systems using holographic and biological structures and concepts of brain operation are also included. The journal pays particular attention to research in the field of neural net systems that may lead to a new generation of computional technologies by endowing them with intelligence.
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