Transformation of polarisation singularities in nonlinear mixing of light beams with frequency conversion in a medium with cubic nonlinearity

IF 0.9 4区 工程技术 Q3 Engineering Quantum Electronics Pub Date : 2022-03-01 DOI:10.1070/QEL17998
K. Grigoriev, V. Makarov
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引用次数: 0

Abstract

We analyse the electric field transverse distributions in light beams with a tripled frequency and with a frequency of 2ω 1 – ω 2, which arise in the bulk of an isotropic cubic-nonlinear medium upon the propagation of nonuniformly polarised beams of fundamental radiation with a multimode transverse structure described by a superposition of Laguerre – Gaussian modes. A relation is found between the total topological indices of the circular polarisation singularity points in the transverse sections of the generated signal beams and the corresponding total indices in the beams of fundamental radiation.
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三次非线性介质中光束非线性混频偏振奇点的变换
本文分析了三倍频率和2ω 1 - ω 2频率的三倍频光束在各向同性三次非线性介质中传播时的电场横向分布,这些光束具有拉盖尔-高斯模式叠加所描述的多模横向结构。在产生的信号波束的横截面上,发现了圆偏振奇异点的总拓扑指数与基辐射波束中相应的总指数之间的关系。
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来源期刊
Quantum Electronics
Quantum Electronics 工程技术-工程:电子与电气
CiteScore
3.00
自引率
11.10%
发文量
95
审稿时长
3-6 weeks
期刊介绍: Quantum Electronics covers the following principal headings Letters Lasers Active Media Interaction of Laser Radiation with Matter Laser Plasma Nonlinear Optical Phenomena Nanotechnologies Quantum Electronic Devices Optical Processing of Information Fiber and Integrated Optics Laser Applications in Technology and Metrology, Biology and Medicine.
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