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Proceedings Paper

Frequency doubling of focused ultrashort pulses under conditions of significant temporal walk-off
Author(s): Solomon M. Saltiel; Kaloyan Koynov; B. Agate; Wilson Sibbett
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Paper Abstract

A theoretical model that describes second harmonic generation of focused ultrashort pulses in the presence of large group velocity mismatch (GVM) is presented. We observe a direct dependence of the optimal focusing on the strength of GVM. Our model also describes the temporal duration of the second harmonic pulsed under these conditions as well as the change in optimal phase mismatch. The theoretical results are compared with an experiment for second harmonic generation with focused femtosecond pulses in a “thick” crystal of KNbO3 with a length much bigger than the time duration-GVM ratio.

Paper Details

Date Published: 7 April 2004
PDF: 9 pages
Proc. SPIE 5478, Laser Optics 2003: Solid State Lasers and Nonlinear Frequency Conversion, (7 April 2004); doi: 10.1117/12.560956
Show Author Affiliations
Solomon M. Saltiel, Univ. of Sofia (Bulgaria)
Kaloyan Koynov, Max Planck Institute for Polymer Research (Germany)
B. Agate, Univ. of St. Andrews (United Kingdom)
Wilson Sibbett, Univ. of St. Andrews (United Kingdom)

Published in SPIE Proceedings Vol. 5478:
Laser Optics 2003: Solid State Lasers and Nonlinear Frequency Conversion
Vladimir I. Ustugov, Editor(s)

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