Cooperative energy transfer in silica fibres doped with ytterbium and terbium
Cooperative energy transfer in silica fibres doped with ytterbium and terbium
Resonant excitation Yb3+ at 974 nm (10267 /cm) in codoped Yb3+-Tb3+ silica based fibres has lead to luminescence clearly being visible from the Tb3+ 5D4 level (20661 /cm). Through time resolved fluorescence measurements we have been able to directly assign the process responsible for the fluorescence to cooperative sensitisation of the Tb3+ 5D4 level by two excited Yb3+ ions. Energy transfer times for the cooperative process have been directly measured, enabling the effects of glass structure on the cooperative process to be explored. Numerical simulations based on the experimental findings have been conducted, enabling both the mechanism for the luminescence to be confirmed and the properties associated with the luminescence to be interpreted.
1-7
Brown, R.S.
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Brocklesby, W.S.
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Barnes, W.L.
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Townsend, J.E.
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January 1995
Brown, R.S.
a617c5b4-9417-4f00-8675-4ce60e757d29
Brocklesby, W.S.
c53ca2f6-db65-4e19-ad00-eebeb2e6de67
Barnes, W.L.
eb37c8ae-64f0-4857-a10d-202b4b09a271
Townsend, J.E.
a5a6f6ef-adb0-4072-8dcb-b6f5b5a47e64
Brown, R.S., Brocklesby, W.S., Barnes, W.L. and Townsend, J.E.
(1995)
Cooperative energy transfer in silica fibres doped with ytterbium and terbium.
Journal of Luminescence, 63 (1-2), .
(doi:10.1016/0022-2313(94)00061-G).
Abstract
Resonant excitation Yb3+ at 974 nm (10267 /cm) in codoped Yb3+-Tb3+ silica based fibres has lead to luminescence clearly being visible from the Tb3+ 5D4 level (20661 /cm). Through time resolved fluorescence measurements we have been able to directly assign the process responsible for the fluorescence to cooperative sensitisation of the Tb3+ 5D4 level by two excited Yb3+ ions. Energy transfer times for the cooperative process have been directly measured, enabling the effects of glass structure on the cooperative process to be explored. Numerical simulations based on the experimental findings have been conducted, enabling both the mechanism for the luminescence to be confirmed and the properties associated with the luminescence to be interpreted.
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Published date: January 1995
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Local EPrints ID: 78235
URI: http://eprints.soton.ac.uk/id/eprint/78235
ISSN: 0022-2313
PURE UUID: 19159b5e-3383-4bb3-ab74-c385b93150a9
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Date deposited: 11 Mar 2010
Last modified: 14 Mar 2024 02:34
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Author:
R.S. Brown
Author:
W.L. Barnes
Author:
J.E. Townsend
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