Abstract

In a recent paper [ Opt. Lett. 10, 402 ( 1985)] we presented a novel passive technique for obtaining giant laser-pulse emission. In this paper we present a more sophisticated model based on Kirchhoff–Fresnel diffraction theory that confirms the aberrationless Gaussian model used before. Also, a simple criterion for short-pulse generation in the Q switch by the self-focusing technique is derived. A set of equations is obtained that permits the evaluation of the critical parameters that govern the laser dynamics. The second threshold condition is derived, and some typical examples are pointed out.

© 1986 Optical Society of America

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Equations (34)

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