Multiphonon decay rates in chalcogenide glasses
Multiphonon decay rates in chalcogenide glasses
The optical properties of rare earth doped chalcogenide glasses have received a considerable amount of interest in recent years, primarily because of their very low multiphonon decay rates when compared with other glass hosts. In this paper we compare the measured multiphonon decay rates for rare earth doped gallium lanthanum sulphide (GaLaS) glass with results obtained previously and find significant discrepancies. Our results indicate that the multiphonon decay rate across energy gaps in the range 2000-3500/cm is considerably lower than previously calculated and we provide a more accurate set of parameters to describe this process in rare earth doped chalcogenide glasses. These results have significant implications for active devices applications operating in the important 3-5µm wavelength range, where the multiphonon decay rate appears almost an order of magnitude lower than previously estimated.
Samson, B.N.
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Schweizer, T.
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Hector, J.R.
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Brocklesby, W.S.
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Hewak, D.W.
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1998
Samson, B.N.
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Schweizer, T.
1b183bb4-c89d-42bf-81e0-b2e2b9af2635
Hector, J.R.
28b5aa8c-f863-4e22-b07a-6a28aed60ebc
Brocklesby, W.S.
c53ca2f6-db65-4e19-ad00-eebeb2e6de67
Hewak, D.W.
87c80070-c101-4f7a-914f-4cc3131e3db0
Samson, B.N., Schweizer, T., Hector, J.R., Brocklesby, W.S. and Hewak, D.W.
(1998)
Multiphonon decay rates in chalcogenide glasses.
Advances in Photonic Glasses (PacRim3), Kyongju, Korea, Republic of.
20 - 23 Sep 1998.
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Conference or Workshop Item
(Paper)
Abstract
The optical properties of rare earth doped chalcogenide glasses have received a considerable amount of interest in recent years, primarily because of their very low multiphonon decay rates when compared with other glass hosts. In this paper we compare the measured multiphonon decay rates for rare earth doped gallium lanthanum sulphide (GaLaS) glass with results obtained previously and find significant discrepancies. Our results indicate that the multiphonon decay rate across energy gaps in the range 2000-3500/cm is considerably lower than previously calculated and we provide a more accurate set of parameters to describe this process in rare earth doped chalcogenide glasses. These results have significant implications for active devices applications operating in the important 3-5µm wavelength range, where the multiphonon decay rate appears almost an order of magnitude lower than previously estimated.
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1622
- Author's Original
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Published date: 1998
Venue - Dates:
Advances in Photonic Glasses (PacRim3), Kyongju, Korea, Republic of, 1998-09-20 - 1998-09-23
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Local EPrints ID: 76653
URI: http://eprints.soton.ac.uk/id/eprint/76653
PURE UUID: 6033871e-601d-4b47-83a5-c8f815c28a0c
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Date deposited: 11 Mar 2010
Last modified: 14 Mar 2024 02:34
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Author:
B.N. Samson
Author:
T. Schweizer
Author:
J.R. Hector
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