Spectral diagnostics of an optical discharge propagating along a hollow-core optical fibre

Autor:	Alexey F. Kosolapov, Yu P Yatsenko, I. A. Bufetov, A. N. Kolyadin
Rok vydání:	2021
Předmět:	Hollow core Optical fiber Materials science Optical discharge Optics law business.industry Statistical and Nonlinear Physics Electrical and Electronic Engineering business Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention
Zdroj:	Quantum Electronics. 51:232-239
ISSN:	1468-4799 1063-7818
DOI:	10.1070/qel17481
Popis:	The results of spectral diagnostics of an optical discharge (OD) plasma propagating through a hollow-core revolver fibre under the action of repetitively pulsed laser radiation are presented. The revolver fibre is made of silica glass, with a diameter of the hollow core being 20 μm. The peak values of the laser radiation intensity reach 1012 W cm−2at an average Nd : YAG laser power of about 2 W. The time-averaged spectrum of the OD plasma in the visible range has the form of a continuum and is close to the blackbody spectrum with a temperature of 13.3 – 17 kK. The form of the spectrum does not depend on the gas filling of the fibre core (air or argon). In the UV part of the spectrum, lines of neutral silicon are observed, which are indicative of the partial evaporation of the reflecting cladding of the fibre.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::cc1d24ae95cd8d96938b5bf2c556395c https://doi.org/10.1070/qel17481 Zobrazit plný text záznamu