V. Trofimov, N. N. Rosanov, Y. Yang, S. V. Fedorov, J. Yu, N. A. Veretenov, “Refraction by gas inhomogeneities during laser heating of a metal”, Optics and Spectroscopy, 2022, Volume 130, Issue 4,Pages <nobr>595

Laser physics and laser optics

Refraction by gas inhomogeneities during laser heating of a metal

V. Trofimov^a, N. N. Rosanov^b, Y. Yang^a, S. V. Fedorov^b, J. Yu^a, N. A. Veretenov^a

^a South China University of Technology, 510640 Guangzhou China Guangzhou, China
^b Ioffe Institute, St. Petersburg

Abstract: An analysis is made of the distribution of the refractive index near the boundary of a metal heated by laser radiation. The gradient of the refractive index of the gas, caused by the heat flux, and the distribution of the refractive index in the inhomogeneously heated gas are found. The drift of the laser beam due to the refraction of radiation in a gas is estimated, which shows an increase in the drift for narrow laser beams.

Keywords: refraction in gas, gas heating, metal laser heating.

Received: 27.12.2021
Revised: 27.12.2021
Accepted: 10.01.2022

DOI: 10.21883/OS.2022.04.52280.55-21