Intrinsic single- and multiple-pulse laser-induced damage in silicate glasses in the femtosecond-to-nanosecond region

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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/214963

Title: Intrinsic single- and multiple-pulse laser-induced damage in silicate glasses in the femtosecond-to-nanosecond region
Author(s): Efimov, Oleg; Juodkazis, Saulius; Misawa, Hiroaki
Abstract: We show that the threshold power density of the intrinsic laser-induced damage in borosilicate glass at ∼1 μm wavelength does not depend on pulse duration from 2×10−13 to 3×10−8 s and has the same value for both single- and multiple-pulse exposure of the sample. This indicates that the mechanism of the intrinsic damage in glasses involves a collective response of a certain volume in the dielectric as a whole, such as “dielectric-metal” phase transition, rather than a process of individual generation and accumulation of electrons, such as multiphoton, tunneling, or avalanche. Also, we demonstrate that under femtosecond exposure the threshold of the plasma formation in transparent glasses is considerably higher than the threshold of the residual change of medium parameters.
Publication type: Journal article
Source: Physical Review A, Vol. 69, no. 4 (Apr 2004), article no. 042903
Publication year: 2004
FOR Code(s): 01 Mathematical Sciences; 02 Physical Sciences; 03 Chemical Sciences
Keyword(s): Damage; Femtosecond laser pulses; Silicate glasses
Publisher: American Physical Society
ISSN: 1050-2947
Publisher URL: http://dx.doi.org/10.1103/PhysRevA.69.042903
Peer reviewed