Transformation of the polarization distribution in the cross-section of light beam by self-focusing in a medium with spatial dispersion of nonlinearity

Author

Golubkov, A.A. ; Makarov, V.A. ; Perezhogin, I.A.

Author_Institution

Phys. Fac. & Int. Laser Center, Lomonosov (M.V.) State Univ., Moscow, Russia

fYear

2003

fDate

19-20 Sept. 2003

Firstpage

12

Abstract

Summary form only given. The self-action of a light beam of the Gaussian profile with a distribution of elliptical polarization uniform in the cross-section in a nonabsorbing medium with spatial dispersion of cubic nonlinearity has been investigated numerically. We have analyzed the dependences of the intensity, the degree of ellipticity and the rotation angle of the main axis of a beam polarization ellipse on the transverse coordinates and length of the medium. It has been established that nonlocality of a nonlinear optical response of the isotropic medium and elliptical polarization of incident radiation strongly affect the threshold conditions of self-focusing and substantially change the character of propagation of Gaussian beams.

Keywords

light polarisation; optical dispersion; optical self-focusing; polarisation; Gaussian profile; elliptical polarization; isotropic medium; light beam; nonabsorbing medium; polarization; rotation angle; self-action; self-focusing; spatial dispersion; transverse coordinates; Laser beams; Laser theory; Near-field radiation pattern; Nonlinear optics; Optical polarization; Optical propagation; Physics; Shape;

fLanguage

English

Publisher

ieee

Conference_Titel

Laser and Fiber-Optical Networks Modeling, 2003. Proceedings of LFNM 2003. 5th International Workshop on

Print_ISBN

0-7803-7709-5

Type

conf

DOI

10.1109/LFNM.2003.1246061

Filename

1246061