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

Autor:	K.S. Grigoriev, V.A. Makarov
Rok vydání:	2022
Předmět:	Statistical and Nonlinear Physics Electrical and Electronic Engineering Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials
Zdroj:	Quantum Electronics. 52:247-253
ISSN:	1468-4799 1063-7818
Popis:	We analyse the electric field transverse distributions in light beams with a tripled frequency and with a frequency of 2ω1–ω2, 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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b7098aa79fa54de59f2f743dac374263 https://doi.org/10.1070/qel17998 Zobrazit plný text záznamu