Publication Details:

Լույս է տեսնում 1966 թվականից՝ տարին 4 անգամ։

Journal or Publication Title:

ՀՀ ԳԱԱ Տեղեկագիր: Ֆիզիկա = Proceedings of the NAS RA: Physics

Date of publication:

2025

Volume:

60

Number:

3

ISSN:

0002-3035

Official URL:

Contributor(s):

Պատ․ խմբ․՝ Գ․ Մ․ Ղարիբյան (1966-1992) ; Գլխ․ խմբ․՝ Վ․ Մ․ Հարությունյան (1993-2021) ; Կ․ Մ․ Ղամբարյան (2022-)

Coverage:

324-326

Abstract:

The current study explores Self-focusing of Cosh–Gaussian (ChG) laser beam through collisional plasma. Here, we have also taken in to account effect of linear absorption. The non-uniform heating in collisional plasma causes carriers redistribution resulting in generation of density gradients in plasma. This density gradient in fact causes self-focusing of beam. The wave equation for electric field vector of laser beam is solved using paraxial approach to obtain 2nd order ODE for beam waist of laser beam. Since, it is not possible to solve this differential equation through direct method. So, this differential equation is numerically solved to investigate the change in beam waist of beam with dimensionless propagation distance. Effect of change in laser intensity, plasma density, decentered parameter and absorption coefficient on laser beam’s waist is also explored.

Format:

pdf

Identifier:

click here to follow the link ; oai:arar.sci.am:422303

Call number:

АЖ 415

Location of original object:

ՀՀ ԳԱԱ Հիմնարար գիտական գրադարան