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Proceedings Paper

Refractive-index increase in laser-written waveguides in glasses
Author(s): Alexander M. Streltsov; Carl W. Ponader; Joseph F. Schroeder
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Paper Abstract

We present estimates of the refractive-index change in waveguides in silica produced by focused femtosecond laser pulses. The estimates are based on the shift of the central frequency of ω4 (TO) band (Si-O stretching mode) in micro-Raman spectra. These data were compared with the relation of this parameter to density and to refractive index changes in seen in glasses modified by high pressure or irradiation. We conclude that the measured refractive-index increase in the waveguides can be explained by densification of glass.

Paper Details

Date Published: 7 June 2006
PDF: 6 pages
Proc. SPIE 6261, High-Power Laser Ablation VI, 626132 (7 June 2006); doi: 10.1117/12.669347
Show Author Affiliations
Alexander M. Streltsov, Corning Inc. (United States)
Carl W. Ponader, Corning Inc. (United States)
Joseph F. Schroeder, Corning Inc. (United States)

Published in SPIE Proceedings Vol. 6261:
High-Power Laser Ablation VI
Claude R. Phipps, Editor(s)

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