Title

Processing And Characterization Of New Passive And Active Oxysulfide Glasses In The Ge-Ga-Sb-S-O System

Keywords

Erbium; Laser irradiation; Luminescence properties; Oxysulfide; Photo-sensitivity; Raman spectroscopy

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 GeO2 or Sb2O3 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 Er2O3 and Sb2O3 and also by melting the Er3+ doped chalcogenide glass with Sb2O3. Modification of the emission spectra at 1500 nm of Er3+ doped samples with the introduction of oxygen revealed that Er3+ 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. © 2009 Elsevier Inc. All rights reserved.

Publication Date

1-1-2009

Publication Title

Journal of Solid State Chemistry

Volume

182

Issue

10

Number of Pages

2646-2655

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.jssc.2009.07.020

Socpus ID

70349498634 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/70349498634

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