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Proceedings Paper

Blow-up behavior of high-power laser field in tiny nonabsorbing defects in transparent materials
Author(s): Vitali E. Gruzdev; Anastasia S. Gruzdeva
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Paper Abstract

Mechanism of superlocal increasing of laser-field amplitude in transparent inclusions with size less that 1/4th of radiation wavelength is proposed and described. It is shown that incident field amplitude must exceed some threshold value for the field increasing to start within the inclusion. Small exceeding of the threshold value results in blow-up increasing of laser field so that the process can be referred to as field blow-up instability. Computer simulation is used to investigate dependence of blow-up instability threshold on inclusion and radiation parameters for 1D propagation of femtosecond pulses through isotropic Kerr-like dielectric. Obtained results are discussed from the viewpoint of laser-induced damage of transparent materials.

Paper Details

Date Published: 20 April 1998
PDF: 7 pages
Proc. SPIE 3244, Laser-Induced Damage in Optical Materials: 1997, (20 April 1998); doi: 10.1117/12.306976
Show Author Affiliations
Vitali E. Gruzdev, S.I. Vavilov State Optical Institute (Russia)
Anastasia S. Gruzdeva, S.I. Vavilov State Optical Institute (Russia)

Published in SPIE Proceedings Vol. 3244:
Laser-Induced Damage in Optical Materials: 1997
Gregory J. Exarhos; Arthur H. Guenther; Mark R. Kozlowski; M. J. Soileau, Editor(s)

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