Laser distillation-deposition synthesis of silica glasses with variable concentrations of oxygen-deficient centers

V. F. Lebedev; Valery M. Marchenko; Alexey O. Rybaltovski; V. A. Tikhomirov

doi:10.1117/12.203609

1 March 1995 Laser distillation-deposition synthesis of silica glasses with variable concentrations of oxygen-deficient centers

V. F. Lebedev, Valery M. Marchenko, Alexey O. Rybaltovski, V. A. Tikhomirov

Author Affiliations +

Proceedings Volume 2498, Laser Methods of Surface Treatment and Modification: ALT '94 International Conference; (1995) https://doi.org/10.1117/12.203609
Event: Laser Methods of Surface Treatment and Modification: ALT '94 International Conference, 1994, Konstanz, Germany

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.

Citation Download Citation

V. F. Lebedev, Valery M. Marchenko, Alexey O. Rybaltovski, and V. A. Tikhomirov "Laser distillation-deposition synthesis of silica glasses with variable concentrations of oxygen-deficient centers", Proc. SPIE 2498, Laser Methods of Surface Treatment and Modification: ALT '94 International Conference, (1 March 1995); https://doi.org/10.1117/12.203609

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