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Ga-La-S glass for UV and IR applications

Ga-La-S glass for UV and IR applications
Ga-La-S glass for UV and IR applications
Gallium lanthanum sulphide glass (GLS) have been widely studied in the last forty years for middle-infrared (MIR) applications. In this paper we report the results of the compositional substitution in GLS glass. The samples were prepared via melt-quenching method in an argon-purged atmosphere. A wide range of compositions was studied to define the glass forming region of the modified material. The samples exhibiting glassy characteristics were furtherly characterised. In particular, the optical and thermal properties of the sample were investigated in order to rationalise the role of sulphur in the formation of the glass. The addition of heavy metals to GLS glass generally resulted in a lower glass transition temperature and an extended transmission window. Particularly, the IR edge was found to be extended from about 9µm for GLS glass to about 13µm for doped GLS glass. Furthermore, the addition of these modifications did not affect the UV edge dramatically. Hypothesis on changes within the glass network is also being considered to explain these modifications.
Ravagli, Andrea
36bc59df-8134-42d1-9871-bcf7bab6539a
Craig, Chris
2328b42b-552e-4a82-941d-45449e952f10
Hewak, Daniel
87c80070-c101-4f7a-914f-4cc3131e3db0
Ravagli, Andrea
36bc59df-8134-42d1-9871-bcf7bab6539a
Craig, Chris
2328b42b-552e-4a82-941d-45449e952f10
Hewak, Daniel
87c80070-c101-4f7a-914f-4cc3131e3db0

Ravagli, Andrea, Craig, Chris and Hewak, Daniel (2016) Ga-La-S glass for UV and IR applications. IONS Quebec 2016, Quebec, Canada. 19 - 21 May 2016.

Record type: Conference or Workshop Item (Paper)

Abstract

Gallium lanthanum sulphide glass (GLS) have been widely studied in the last forty years for middle-infrared (MIR) applications. In this paper we report the results of the compositional substitution in GLS glass. The samples were prepared via melt-quenching method in an argon-purged atmosphere. A wide range of compositions was studied to define the glass forming region of the modified material. The samples exhibiting glassy characteristics were furtherly characterised. In particular, the optical and thermal properties of the sample were investigated in order to rationalise the role of sulphur in the formation of the glass. The addition of heavy metals to GLS glass generally resulted in a lower glass transition temperature and an extended transmission window. Particularly, the IR edge was found to be extended from about 9µm for GLS glass to about 13µm for doped GLS glass. Furthermore, the addition of these modifications did not affect the UV edge dramatically. Hypothesis on changes within the glass network is also being considered to explain these modifications.

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Abstract IONS Quebec 2016 Ravagli - revised.docx - Other
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More information

e-pub ahead of print date: 19 May 2016
Venue - Dates: IONS Quebec 2016, Quebec, Canada, 2016-05-19 - 2016-05-21
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 397283
URI: http://eprints.soton.ac.uk/id/eprint/397283
PURE UUID: 086bd815-b3ac-4b9d-8785-d268b1c087ec
ORCID for Chris 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: 30 Jun 2016 11:32
Last modified: 18 Jul 2020 00:32

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Contributors

Author: Andrea Ravagli
Author: Chris Craig ORCID iD
Author: Daniel Hewak ORCID iD

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