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Proceedings Paper

Laser distillation-deposition synthesis of silica glasses with variable concentrations of oxygen-deficient centers
Author(s): V. F. Lebedev; Valery M. Marchenko; Alexey O. Rybaltovski; V. A. Tikhomirov
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Paper Abstract

Samples of silica glasses of approximately 1 cm3 scale were synthesized with 100 W cw CO2 laser torch on the target surface of silica materials in oxide, neutral and reductive atmospheres. Fused quartz glass, silica glasses synthesized by SiCl4 + H2 + O2 flame hydrolysis and in SiCl4 + O2 plasma and Ge-doped glass were used as starting materials. Oxygen deficient center concentrations of approximately 1016 cm-3 were registered in samples synthesized in neutral and reductive conditions by optical absorption and luminescence spectroscopy. Transformations of spectra in dependence on Ge concentration confirm that the spectra are characteristic of oxygen deficient equals Si: and equals Ge: point defects.

Paper Details

Date Published: 1 March 1995
PDF: 7 pages
Proc. SPIE 2498, Laser Methods of Surface Treatment and Modification: ALT '94 International Conference, (1 March 1995); doi: 10.1117/12.203609
Show Author Affiliations
V. F. Lebedev, General Physics Institute (Russia)
Valery M. Marchenko, General Physics Institute (Russia)
Alexey O. Rybaltovski, Moscow State Univ. (Russia)
V. A. Tikhomirov, Moscow State Univ. (Russia)

Published in SPIE Proceedings Vol. 2498:
Laser Methods of Surface Treatment and Modification: ALT '94 International Conference
Alexander M. Prokhorov; Vladimir I. Pustovoy, Editor(s)

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