Optical measurement of narrow band rare-earth 4f levels with energies greater than the bandgap of the host
Optical measurement of narrow band rare-earth 4f levels with energies greater than the bandgap of the host
Excited-state absorption spectra of erbium and thulium doped gallium lanthanum sulphide glasses reveal transitions whose final 4f states do not appear in the ground state absorption spectra due to resonance with the fundamental absorption of the glass host. The results give direct evidence for the model of isolated rare earth ions with highly shielded 4f levels showing no noticeable interaction with the host material despite resonance. Only the energy splitting of the 4f levels is relevant for energy transfer processes between rare-earth ions and the host material whereas the absolute energetic position is unimportant.
1537-1540
Schweizer, T.
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Mobert, P.E.A.
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Hector, J.R.
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Hewak, D.W.
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Brocklesby, W.S.
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Payne, D.N.
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Huber, G.
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February 1998
Schweizer, T.
1b183bb4-c89d-42bf-81e0-b2e2b9af2635
Mobert, P.E.A.
e5f81c84-0145-4bce-9882-b2e04abf1905
Hector, J.R.
28b5aa8c-f863-4e22-b07a-6a28aed60ebc
Hewak, D.W.
87c80070-c101-4f7a-914f-4cc3131e3db0
Brocklesby, W.S.
c53ca2f6-db65-4e19-ad00-eebeb2e6de67
Payne, D.N.
4f592b24-707f-456e-b2c6-8a6f750e296d
Huber, G.
f53411af-3002-48a1-bb5c-c9ca56e9e43e
Schweizer, T., Mobert, P.E.A., Hector, J.R., Hewak, D.W., Brocklesby, W.S., Payne, D.N. and Huber, G.
(1998)
Optical measurement of narrow band rare-earth 4f levels with energies greater than the bandgap of the host.
Physical Review Letters, 80 (7), .
(doi:10.1103/PhysRevLett.80.1537).
Abstract
Excited-state absorption spectra of erbium and thulium doped gallium lanthanum sulphide glasses reveal transitions whose final 4f states do not appear in the ground state absorption spectra due to resonance with the fundamental absorption of the glass host. The results give direct evidence for the model of isolated rare earth ions with highly shielded 4f levels showing no noticeable interaction with the host material despite resonance. Only the energy splitting of the 4f levels is relevant for energy transfer processes between rare-earth ions and the host material whereas the absolute energetic position is unimportant.
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1572
- Author's Original
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Published date: February 1998
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Local EPrints ID: 77916
URI: http://eprints.soton.ac.uk/id/eprint/77916
ISSN: 0031-9007
PURE UUID: 91f9f651-8d99-4ed2-8a87-5ef42a368059
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Date deposited: 11 Mar 2010
Last modified: 14 Mar 2024 02:34
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Author:
T. Schweizer
Author:
P.E.A. Mobert
Author:
J.R. Hector
Author:
G. Huber
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