This article is cited in 9 papers

Nonlinear optical phenomena

Optimal conditions for the generation of the third harmonic of focused radiation in a self-interaction regime

I. A. Kulagin, T. B. Usmanov

"Akadempribor" Research and Production Association, Academy of Science of Uzbekistan, Tashkent

Abstract: A method developed for the analysis of the interaction of wave beams in a self-interaction regime is used to determine the changes in the optimal conditions for third-harmonic generation with changes in the degree of focusing of the fundamental-frequency radiation in isotropic media. Conditions under which a redistribution of the intensities and phases of the interacting wave beams reduces the efficiency of third-harmonic generation are identified. It is shown that, under strong focusing conditions, there may be additional extrema in the dependence of the intensity of the harmonic on the density of the medium.

PACS: 42.65.Ky, 42.60.Lh

Received: 11.05.1998

 English version: Quantum Electronics, 1998, 28:12, 1092–1096

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