Photo-ionization of glasses by IR femtosecond laser pulses

Oleg M. Efimov; Leonid B. Glebov; Steve E. Grantham; Martin C. Richardson

doi:10.1117/12.306981

20 April 1998 Photo-ionization of glasses by IR femtosecond laser pulses

Oleg M. Efimov, Leonid B. Glebov, Steve E. Grantham, Martin C. Richardson

Proceedings Volume 3244, Laser-Induced Damage in Optical Materials: 1997; (1998) https://doi.org/10.1117/12.306981
Event: Laser-Induced Damage in Optical Materials: 1997, 1997, Boulder, CO, United States

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.

Citation Download Citation

Oleg M. Efimov, Leonid B. Glebov, Steve E. Grantham, and Martin C. Richardson "Photo-ionization of glasses by IR femtosecond laser pulses", Proc. SPIE 3244, Laser-Induced Damage in Optical Materials: 1997, (20 April 1998); https://doi.org/10.1117/12.306981

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