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13 May 1997 Arrest of self-focusing collapse with quadratic nonlinearities
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Since the early work of Kelley in 1965, self-focusing in transparent dielectric materials was recognized as one of the mechanisms of optical induced damage in laser materials. Recently the experimental demonstration of stable solitary waves in Quadratic materials has shown that the catastrophic collapse of laser beams can be arrested in materials with a pure second order response. New ways to solve the self- focusing damage mechanism in laser materials can result from such an experimental discovery. Indeed choosing host laser materials with a quadratic nonlinearity can considerably delay the appearance of the laser beam collapse. We present theoretical considerations and numerical calculations on materials design concepts which can in practice resolve the self-focusing collapse in the presence of a quadratic nonlinearity.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Alfredo DeRossi, Gaetano Assanto, Stefano Trillo, and William Eugene Torruellas "Arrest of self-focusing collapse with quadratic nonlinearities", Proc. SPIE 2966, Laser-Induced Damage in Optical Materials: 1996, (13 May 1997);

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