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Proceedings Paper

Role of self-focusing in laser-induced breakdown of water caused by nano- and picosecond pulses
Author(s): Oleg M. Efimov; Andrei M. Mekryukov; Vladimir S. Popikov; Aristide C. Dogariu; Leonid B. Glebov; M. J. Soileau; Eric W. Van Stryland
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Paper Abstract

An experimental investigation of laser-induced breakdown of water and subthreshold phenomena using pulsed laser radiation in the nanosecond to picosecond region has been performed. It has been shown that self-focusing and suspended particles have a strong influence on laser-induced breakdown of water. A significant decrease in transmittance for an input irradiance 1 to 2 orders of magnitude less than the laser-induced breakdown threshold of water as observed, as well as a strong spot size dependence of this threshold. Besides the investigated processes result in a breakdown threshold of water for small spot sizes that is nearly 10 times larger than that of glass due to a sharp increase in scattering from inhomogeneities formed as a result of self- focusing. For large spot sizes the breakdown threshold of water is considerably less than for the same glasses due to breakdown initiated by suspended particles.

Paper Details

Date Published: 13 May 1997
PDF: 6 pages
Proc. SPIE 2966, Laser-Induced Damage in Optical Materials: 1996, (13 May 1997); doi: 10.1117/12.274230
Show Author Affiliations
Oleg M. Efimov, S.I. Vavilov State Optical Institute (Russia)
Andrei M. Mekryukov, S.I. Vavilov State Optical Institute (Russia)
Vladimir S. Popikov, S.I. Vavilov State Optical Institute (Russia)
Aristide C. Dogariu, CREOL/Univ. of Central Florida (United States)
Leonid B. Glebov, CREOL/Univ. of Central Florida (United States)
M. J. Soileau, CREOL/Univ. of Central Florida (United States)
Eric W. Van Stryland, CREOL/Univ. of Central Florida (United States)


Published in SPIE Proceedings Vol. 2966:
Laser-Induced Damage in Optical Materials: 1996
Harold E. Bennett; Arthur H. Guenther; Mark R. Kozlowski; Brian Emerson Newnam; M. J. Soileau, Editor(s)

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