Laser beam propagation in nonlinearly absorbing media

Andrew Forbes

doi:10.1117/12.682842

31 August 2006 Laser beam propagation in nonlinearly absorbing media

Andrew Forbes

Proceedings Volume 6290, Laser Beam Shaping VII; 629003 (2006) https://doi.org/10.1117/12.682842
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

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.

Citation Download Citation

Andrew Forbes "Laser beam propagation in nonlinearly absorbing media", Proc. SPIE 6290, Laser Beam Shaping VII, 629003 (31 August 2006); https://doi.org/10.1117/12.682842

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