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Optical, thermal, and mechanical characterization of Ga2Se3-Added GLS glass

Optical, thermal, and mechanical characterization of Ga2Se3-Added GLS glass
Optical, thermal, and mechanical characterization of Ga2Se3-Added GLS glass
Gallium lanthanum sulfide glass (GLS) has been widely studied in the last 40 years for middle‐infrared applications. In this work, the results of the substitution of selenium for sulphur in GLS glass are described. The samples are prepared via melt‐quench method in an argon‐purged atmosphere. A wide range of compositional substitutions are studied to define the glass‐forming region of the modified material. The complete substitution of Ga2S3 by Ga2Se3 is achieved by involving new higher quenching rate techniques compared to those containing only sulfides. The samples exhibiting glassy characteristics are further characterized. In particular, the optical and thermal properties of the sample are investigated in order to understand the role of selenium in the formation of the glass. The addition of selenium to GLS glass generally results in a lower glass transition temperature and an extended transmission window. Particularly, the IR edge is found to be extended from about 9 µm for GLS glass to about 15 µm for Se‐added GLS glass defined by the 50% transmission point. Furthermore, the addition of selenium does not affect the UV edge dramatically. The role of selenium is hypothesized in the glass formation to explain these changes.
1521-4095
Ravagli, Andrea
36bc59df-8134-42d1-9871-bcf7bab6539a
Craig, Christopher
2328b42b-552e-4a82-941d-45449e952f10
Alzaidy, Ghadah, Abdulrahman
2d39b828-3eb4-4d96-85e6-d436a2b71435
Bastock, Paul J.
73583809-d787-4eb4-8b93-2110c5e2f29e
Hewak, Daniel
87c80070-c101-4f7a-914f-4cc3131e3db0
Ravagli, Andrea
36bc59df-8134-42d1-9871-bcf7bab6539a
Craig, Christopher
2328b42b-552e-4a82-941d-45449e952f10
Alzaidy, Ghadah, Abdulrahman
2d39b828-3eb4-4d96-85e6-d436a2b71435
Bastock, Paul J.
73583809-d787-4eb4-8b93-2110c5e2f29e
Hewak, Daniel
87c80070-c101-4f7a-914f-4cc3131e3db0

Ravagli, Andrea, Craig, Christopher, Alzaidy, Ghadah, Abdulrahman, Bastock, Paul J. and Hewak, Daniel (2017) Optical, thermal, and mechanical characterization of Ga2Se3-Added GLS glass. Advanced Materials, 29 (27), [1606329]. (doi:10.1002/adma.201606329).

Record type: Article

Abstract

Gallium lanthanum sulfide glass (GLS) has been widely studied in the last 40 years for middle‐infrared applications. In this work, the results of the substitution of selenium for sulphur in GLS glass are described. The samples are prepared via melt‐quench method in an argon‐purged atmosphere. A wide range of compositional substitutions are studied to define the glass‐forming region of the modified material. The complete substitution of Ga2S3 by Ga2Se3 is achieved by involving new higher quenching rate techniques compared to those containing only sulfides. The samples exhibiting glassy characteristics are further characterized. In particular, the optical and thermal properties of the sample are investigated in order to understand the role of selenium in the formation of the glass. The addition of selenium to GLS glass generally results in a lower glass transition temperature and an extended transmission window. Particularly, the IR edge is found to be extended from about 9 µm for GLS glass to about 15 µm for Se‐added GLS glass defined by the 50% transmission point. Furthermore, the addition of selenium does not affect the UV edge dramatically. The role of selenium is hypothesized in the glass formation to explain these changes.

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Accepted/In Press date: 21 March 2017
e-pub ahead of print date: 11 May 2017
Published date: May 2017
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 410125
URI: http://eprints.soton.ac.uk/id/eprint/410125
ISSN: 1521-4095
PURE UUID: 9f8ef2f7-6802-466f-a312-a1808f8db0a0
ORCID for Christopher Craig: ORCID iD orcid.org/0000-0001-6919-4294
ORCID for Daniel Hewak: ORCID iD orcid.org/0000-0002-2093-5773

Catalogue record

Date deposited: 03 Jun 2017 04:03
Last modified: 20 Feb 2021 02:43

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