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Proceedings Paper

Photo-ionization of glasses by IR femtosecond laser pulses
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Paper Abstract

Photo-ionization of silicate glasses under high-power, 850 nm, femtosecond laser has been studied. It was found that color centers formation and intrinsic luminescence of boro- and alkali-silicate glasses occurred at irradiances well below the threshold for laser-induced damage. Simultaneously a supercontinuum generation in the visible and UV spectral regions was observed in all the glasses studied. From these studies it was deduced that photo- ionization of glass matrix results from linear and two-photon absorption of the short- wavelength component of the supercontinuum. No color center absorption in the visible region was observed in fused silica at irradiances up to the laser damage threshold.

Paper Details

Date Published: 20 April 1998
PDF: 8 pages
Proc. SPIE 3244, Laser-Induced Damage in Optical Materials: 1997, (20 April 1998); doi: 10.1117/12.306981
Show Author Affiliations
Oleg M. Efimov, S.I. Vavilov State Optical Institute (Russia)
Leonid B. Glebov, CREOL/Univ. of Central Florida (United States)
Steve E. Grantham, CREOL/Univ. of Central Florida (United States)
Martin C. Richardson, CREOL/Univ. of Central Florida (United States)

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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