Title

Processing and characterization of new passive and active oxysulfide glasses in the Ge-Ga-Sb-S-O system

Authors

Authors

L. Petit; J. Abel; T. Anderson; J. Choi; V. Nazabal; V. Moizan; M. Couzi; M. Richardson; C. Maurel; T. Cardinal;K. Richardson

Comments

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Abbreviated Journal Title

J. Solid State Chem.

Keywords

Oxysulfide; Raman spectroscopy; Erbium; Luminescence properties; Laser; irradiation; Photo-sensitivity; OPTICAL-FIBER AMPLIFIERS; CHALCOGENIDE GLASSES; PHOTO-RESPONSE; FILMS; Chemistry, Inorganic & Nuclear; Chemistry, Physical

Abstract

New passive and active oxysulfide glasses have been prepared in the Ge-Ga-Sb-S-O system employing a two-step melting process which involves the processing of the chalcogenide glass (ChG) and its subsequent melting with amorphous GeO(2) or Sb(2)O(3) powder. Optical characterization of the oxysulfide glasses has shown that the UV cut-off wavelength decreases with increasing oxygen content. Using Raman spectroscopy, correlations have been made between the formation of new Ge- and Sb-based oxysulfide structural units, the Sb content and the O/S ratio. We demonstrate the successful processing of active rare earth doped oxysulfide glasses by melting the chalcogenide glass with Er(2)O(3) and Sb(2)O(3) and also by melting the Er(3+) doped chalcogenide glass with Sb(2)O(3). Modification of the emission spectra at 1500 nm of Er(3+) doped samples with the introduction of oxygen revealed that Er(3+) most likely exists in dual O- and S-neighbor environments. Finally, the photo-response of these new glasses upon near-IR femtosecond laser irradiation has been investigated as a function of Sb content and O/S ratio and shows that the glasses are photo-sensitive to NIR fs laser light with the magnitude of the photo-sensitivity dependent on the glass' Sb content and O/S ratio. (C) 2009 Elsevier Inc. All rights reserved.

Journal Title

Journal of Solid State Chemistry

Volume

182

Issue/Number

10

Publication Date

1-1-2009

Document Type

Article

Language

English

First Page

2646

Last Page

2655

WOS Identifier

WOS:000270747800010

ISSN

0022-4596

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