强非局部非线性介质中扭曲矢量涡旋光场的矢量操纵

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Cai-xia Liu, Xiao-bo Hu, Feng-min Wu and Rui-Pin Chen
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引用次数: 0

摘要

我们从理论上研究了在强非局部非线性介质(SNNM)中具有交叉相位的扭曲矢量涡旋束(TVVB)的传播特性和矢量操纵。利用耦合非局部非线性薛定谔方程推导出了在 SNNM 中保持 TVVB 不变 RMS-BM 所需的均方根波束宽度(RMS-BW)和临界功率。数值计算揭示了 TVVB 在 SNNM 中传播时偏振态(SoP)和光强分布演变的新特点。研究发现,在 SNNM 中传播时,拉盖尔高斯模式和赫米特高斯模式之间会发生模式转换,而且 TVVB 的拓扑电荷可通过观察横截面上的干涉强度结构进行精确测量。通过控制初始功率、扭曲系数、初始波束宽度和拓扑电荷等因素,可以实现对 TVVB 的波束形状、SoP 和旋转的操控。这些发现为光学微操作、光通信和材料加工领域的应用带来了希望。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Vectorial manipulation of twisted vector vortex optical fields in strongly nonlocal nonlinear media
We theoretically investigate the propagation properties and vectorial manipulation of twisted vector vortex beams (TVVB) with a cross-phase in a strongly nonlocal nonlinear medium (SNNM). The root mean square beam-width (RMS-BW) and the critical power required to retain the invariant RMS-BM of the TVVB in an SNNM are derived using the coupled nonlocal nonlinear Schrödinger equation. Numerical calculations reveal novel characteristics of the evolution of the state of polarization (SoP) and the optical intensity distributions during the TVVB propagating in an SNNM. It is found that mode conversions between a Laguerre Gaussian and a Hermite Gaussian mode take place during propagation in an SNNM, and the topological charge of the TVVB can be accurately measured by observing the interference intensity structure in the cross-section. Manipulation of the beam shape, SoP, and rotation of the TVVB is achieved by controlling factors such as the initial power, twisting coefficient, initial beam-width, and topological charge. These findings hold promise for applications in optical micro-manipulation, optical communication, and material processing.
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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