Photoionization of silicate glasses exposed to IR femtosecond pulses
Abbreviated Journal Title
J. Non-Cryst. Solids
Keywords
LASER-INDUCED DAMAGE; SUBPICOSECOND PULSES; PHOTOSENSITIVE GLASS; PHASE; MODULATIONS; CROSS-PHASE; WAVE-GUIDES; SELF-PHASE; DIELECTRICS; GENERATION; IONIZATION; Materials Science, Ceramics; Materials Science, Multidisciplinary
Abstract
Photoionization of alkali-silicate. bore-silicate, lead-silicate and photosensitive multi-component silicate glasses has been studied under exposure to infrared femtosecond laser pulses at irradiance below the thresholds of laser-induced damage and catastrophic self-focusing. It is proved that the supercontinuum that is generated in all glasses studied as a result of the femtosecond laser pulses spectral broadening extends up to the short-wavelength part of the ultraviolet region of spectrum even if the glass is opaque in this region. It is shown that photoionization results from absorption of the short-wavelength component of this supercontinuum generated by infrared radiation. This ionization leads to the color center formation and luminescence in the bulk of glasses studied. Photoionization of photosensitive multicomponent glasses leads to the creation of latent image and to the refractive index changing in exposed area after thermodevelopment. Fused silica exhibits the same spectral broadening too but color center formation in the visible was not recorded at irradiance up to the laser damage threshold. (C) 1999 Elsevier Science B.V. All rights reserved.
Journal Title
Journal of Non-Crystalline Solids
Volume
253
Publication Date
1-1-1999
Document Type
Article; Proceedings Paper
Language
English
First Page
58
Last Page
67
WOS Identifier
ISSN
0022-3093
Recommended Citation
"Photoionization of silicate glasses exposed to IR femtosecond pulses" (1999). Faculty Bibliography 1990s. 2613.
https://stars.library.ucf.edu/facultybib1990/2613
Comments
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