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Proceedings Paper

Femtosecond pulses in air: linear and nonlinear regime
Author(s): Lubomir M. Kovachev; Kamen L. Kovachev; Ivaylo Tunchev
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Paper Abstract

In linear regime the single and few cycle femtosecond (fs) pulses propagates on several diffraction lengths changing their shape in semi-spherical (or parabolic) form, far away from plane wave and paraxial approximation. The experiments with fs pulses in air with power little above the critical for self-focusing (nonlinear regime) demonstrated new nonlinear effects as self-guiding, THz longitudinal emission and superbroad enlarging of the spectrum. In this paper we continue with developing of new theoretical model for quantitative description of the above experimental results.

Paper Details

Date Published: 11 November 2009
PDF: 10 pages
Proc. SPIE 7501, International Conference on Ultrafast and Nonlinear Optics 2009, 75010E (11 November 2009); doi: 10.1117/12.849380
Show Author Affiliations
Lubomir M. Kovachev, Institute of Electronics (Bulgaria)
Kamen L. Kovachev, Institute of Electronics (Bulgaria)
Ivaylo Tunchev, Institute of Electronics (Bulgaria)

Published in SPIE Proceedings Vol. 7501:
International Conference on Ultrafast and Nonlinear Optics 2009
Solomon M. Saltiel; Alexander A. Dreischuh; Ivan P. Christov, Editor(s)

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