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Proceedings Paper

Laser beam propagation in nonlinearly absorbing media
Author(s): Andrew Forbes
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Paper Abstract

Many analytical techniques exist to explore the propagation of certain laser beams in free space, or in a linearly absorbing medium. When the medium is nonlinearly absorbing the propagation must be described by an iterative process using the well known Kirchoff-Fresnel diffraction equation. In this paper Gaussian and super-Gaussian beam shapes are propagated both through free space, and through a nonlinearly absorbing medium. The results show that shape invariance during propagation is dependent on the medium under consideration, and we find that super-Gaussian fields are shape invariant in certain nonlinearly absorbing media.

Paper Details

Date Published: 31 August 2006
PDF: 7 pages
Proc. SPIE 6290, Laser Beam Shaping VII, 629003 (31 August 2006); doi: 10.1117/12.682842
Show Author Affiliations
Andrew Forbes, CSIR National Laser Ctr. (South Africa)

Published in SPIE Proceedings Vol. 6290:
Laser Beam Shaping VII
Fred M. Dickey; David L. Shealy, Editor(s)

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