Single- and multiple-pulse laser-induced breakdown in transparent dielectrics in the femto-nanosecond region

Oleg M. Efimov; Saurius Juodkazis; Hiroaki Misawa

doi:10.1117/12.530098

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10 June 2004 Single- and multiple-pulse laser-induced breakdown in transparent dielectrics in the femto-nanosecond region

Oleg M. Efimov, Saurius Juodkazis, Hiroaki Misawa

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Proceedings Volume 5273, Laser-Induced Damage in Optical Materials: 2003; (2004) https://doi.org/10.1117/12.530098
Event: XXXV Annual Symposium on Optical Materials for High Power Lasers: Boulder Damage Symposium, 2003, Boulder, Colorado, United States

Abstract

This review is devoted to a long-term investigation into the nature of the laser-induced damage of silciate glasses. As an important result, we show that the threshold power density of the intrinsic damage of the boro-silicate glass at ~1 μm wavelength does not depend on pulse duration from 2 x 10^-13 to 3 x 10^-8s as long as self-focusing is avoided. This result cannot be explained by existing theories and indicates that the damage mechanism involves a collective response of a certain volume in the dielectric as a whole, rather than the accumulation of electrons via individual generation processes like multiphoton, tunneling, or avalanche. Special attention in the research was paid to investigation into the processes of multiple pulse damage and subthreshold modification of boro- and lead-silicate glasses.

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Oleg M. Efimov, Saurius Juodkazis, and Hiroaki Misawa "Single- and multiple-pulse laser-induced breakdown in transparent dielectrics in the femto-nanosecond region", Proc. SPIE 5273, Laser-Induced Damage in Optical Materials: 2003, (10 June 2004); https://doi.org/10.1117/12.530098

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