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Multiphonon decay rates in chalcogenide glasses

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.
0e9f1440-04ab-4aad-994f-554d24a3a419
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.
0e9f1440-04ab-4aad-994f-554d24a3a419
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), Korea, Republic of. 20 - 23 Sep 1998.

Record type: 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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Published date: 1998
Venue - Dates: Advances in Photonic Glasses (PacRim3), Korea, Republic of, 1998-09-20 - 1998-09-23

Identifiers

Local EPrints ID: 76653
URI: https://eprints.soton.ac.uk/id/eprint/76653
PURE UUID: 6033871e-601d-4b47-83a5-c8f815c28a0c
ORCID for W.S. Brocklesby: ORCID iD orcid.org/0000-0002-2123-6712
ORCID for D.W. Hewak: ORCID iD orcid.org/0000-0002-2093-5773

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Date deposited: 11 Mar 2010
Last modified: 06 Jun 2018 13:12

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Contributors

Author: B.N. Samson
Author: T. Schweizer
Author: J.R. Hector
Author: W.S. Brocklesby ORCID iD
Author: D.W. Hewak ORCID iD

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