Chalcogenide materials: Novel compositions and new applications
Chalcogenide materials: Novel compositions and new applications
In this talk, we describe our recent work on selenium modified Ga:La:S glasses. The addition of Se improves the infrared transmission sufficiently to capture enough of the 8-12 micron window to allow thermal imaging, while at the same time, allowing sufficient visible transmission for object recognition using conventional image capturing. The addition of Se has other implications, increasing the optical nonlinearity, providing longer fluorescent lifetimes when doped with rare earth ions and expanding the transmission window in the important 3-5 micron region. Ga:La:S glasses are superior to commercially available chalcogenides based on alloys of Ga and/or As with S, Se and/or Te. They offer significantly higher alkaline resistance, greater mechanical strength and over 300ºC higher working temperature (Tg > 500ºC). All of these new features suggest Ga:La:S-Se may be a material suitable for the next generation of mid-IR sources through supercontinuum or rare earth doping.
Ravagli, Andrea
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Moog, Bruno Jean
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Guzman Cruz, Fernando Alberto
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Craig, Christopher
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Kar, Ajoy
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Mackenzie, Mark
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Morris, James
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Hewak, Daniel
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30 September 2018
Ravagli, Andrea
36bc59df-8134-42d1-9871-bcf7bab6539a
Moog, Bruno Jean
084c90d1-cfac-453e-96e6-4b2316d91c17
Guzman Cruz, Fernando Alberto
19e24c46-ae30-465b-9d53-853ebf207b2e
Craig, Christopher
2328b42b-552e-4a82-941d-45449e952f10
Kar, Ajoy
20b3671a-3774-4a83-9ddb-fb68163678b1
Mackenzie, Mark
a8c9450a-77f6-4575-8f24-96c7d1f7b13c
Morris, James
cebad3f7-66f6-4dde-a996-633614c82e9c
Hewak, Daniel
87c80070-c101-4f7a-914f-4cc3131e3db0
Ravagli, Andrea, Moog, Bruno Jean, Guzman Cruz, Fernando Alberto, Craig, Christopher, Kar, Ajoy, Mackenzie, Mark, Morris, James and Hewak, Daniel
(2018)
Chalcogenide materials: Novel compositions and new applications.
Advanced Architectures in Photonics 2018, Selwyn College, Cambridge, United Kingdom.
02 - 05 Sep 2018.
Record type:
Conference or Workshop Item
(Other)
Abstract
In this talk, we describe our recent work on selenium modified Ga:La:S glasses. The addition of Se improves the infrared transmission sufficiently to capture enough of the 8-12 micron window to allow thermal imaging, while at the same time, allowing sufficient visible transmission for object recognition using conventional image capturing. The addition of Se has other implications, increasing the optical nonlinearity, providing longer fluorescent lifetimes when doped with rare earth ions and expanding the transmission window in the important 3-5 micron region. Ga:La:S glasses are superior to commercially available chalcogenides based on alloys of Ga and/or As with S, Se and/or Te. They offer significantly higher alkaline resistance, greater mechanical strength and over 300ºC higher working temperature (Tg > 500ºC). All of these new features suggest Ga:La:S-Se may be a material suitable for the next generation of mid-IR sources through supercontinuum or rare earth doping.
Text
AAP2018_Abstract_Submission_Form Final Dan Hewak 6 March 2018
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Published date: 30 September 2018
Venue - Dates:
Advanced Architectures in Photonics 2018, Selwyn College, Cambridge, United Kingdom, 2018-09-02 - 2018-09-05
Identifiers
Local EPrints ID: 422192
URI: http://eprints.soton.ac.uk/id/eprint/422192
PURE UUID: 9a8657cf-572e-4f3b-8278-47e3ac2ca2f3
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Date deposited: 18 Jul 2018 16:31
Last modified: 16 Mar 2024 04:10
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Contributors
Author:
Andrea Ravagli
Author:
Bruno Jean Moog
Author:
Fernando Alberto Guzman Cruz
Author:
Ajoy Kar
Author:
Mark Mackenzie
Author:
James Morris
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