Title

Effect of IR femtosecond laser irradiation on the structure of new sulfo-selenide glasses

Authors

Authors

L. Petit; N. Carlie; T. Anderson; M. Couzi; J. Choi; M. Richardson;K. C. Richardson

Comments

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Abbreviated Journal Title

Opt. Mater.

Keywords

germanium-based sulfide glass; Raman spectroscopy; femtosecond laser; irradiation; photo-expansion; photo-sensitivity; GE-SB-S; CHALCOGENIDE GLASSES; WAVE-GUIDES; OPTICAL-PROPERTIES; RAMAN-SPECTRA; SYSTEM; FABRICATION; GRATINGS; PULSES; SILICA; Materials Science, Multidisciplinary; Optics

Abstract

We report results of a systematic study to evaluate for the first time, the relationship between compositional variation and photosensitivity of new glasses in the Ge-Sb-S/Se system with varying ratios of chalcogen (S/Se), upon IR femstosecond laser exposure. It is shown that the photo-sensitivity of the glass depends on the glass composition and that IR femtosecond laser irradiation in this system results in near-surface photo-expansion. Glass structure modification as a function of S/Se ratio and the influence of laser dose has been characterized using micro-Raman spectroscopy and is correlated to the resulting photo-expansion. As compared to other widely studied binary chalcogenide glass systems, photo-expansion was found to vary with the Se content. Such modification opens the pathway towards the laser writing of photonic devices in the surface of the material. (c) 2006 Elsevier B.V. All rights reserved.

Journal Title

Optical Materials

Volume

29

Issue/Number

8

Publication Date

1-1-2007

Document Type

Article

Language

English

First Page

1075

Last Page

1083

WOS Identifier

WOS:000245847200031

ISSN

0925-3467

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