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Room temperature infrared-laser-induced upconversion in Nd3+ doped Ta2O5 waveguides

Room temperature infrared-laser-induced upconversion in Nd3+ doped Ta2O5 waveguides
Room temperature infrared-laser-induced upconversion in Nd3+ doped Ta2O5 waveguides
The room temperature infrared to visible upconversion properties of Nd3+ doped Ta2O5 rib waveguides deposited on a silica substrate have been investigated in the 720-900 nm excitation range. Two possible upconversion mechanisms exist at different excitation wavelengths. The main one is due to energy transfer upconversion and results in the population of the 4G7/2 level. Radiative relaxations from this level to the 4I9/2, 4I11/2 and 4I13/2 multiplets produce visible emission bands in the green, orange and red regions. Excited state absorption from the 4F3/2 to the 2P1/2 state can also occur, giving rise to a blue emission band (2P1/2 to 4I9/2). A rate equation analyses supports the proposed mechanisms.
0009-2614
198-204
Lahoz, F.
9852a047-43a2-4649-a3a0-eb0322d565b3
Martín, I.R.
a0afbe3f-561f-4db4-877c-dfc913fba9c7
Shepherd, David
9fdd51c4-39d6-41b3-9021-4c033c2f4ead
Wilkinson, J.S.
73483cf3-d9f2-4688-9b09-1c84257884ca
Hassan, M.A.
a63a0bd2-8f6a-4d76-8143-08a1cb83d110
Lahoz, F.
9852a047-43a2-4649-a3a0-eb0322d565b3
Martín, I.R.
a0afbe3f-561f-4db4-877c-dfc913fba9c7
Shepherd, David
9fdd51c4-39d6-41b3-9021-4c033c2f4ead
Wilkinson, J.S.
73483cf3-d9f2-4688-9b09-1c84257884ca
Hassan, M.A.
a63a0bd2-8f6a-4d76-8143-08a1cb83d110

Lahoz, F., Martín, I.R., Shepherd, David, Wilkinson, J.S. and Hassan, M.A. (2006) Room temperature infrared-laser-induced upconversion in Nd3+ doped Ta2O5 waveguides. Chemical Physics Letters, 421 (1-3), 198-204. (doi:10.1016/j.cplett.2006.01.076).

Record type: Article

Abstract

The room temperature infrared to visible upconversion properties of Nd3+ doped Ta2O5 rib waveguides deposited on a silica substrate have been investigated in the 720-900 nm excitation range. Two possible upconversion mechanisms exist at different excitation wavelengths. The main one is due to energy transfer upconversion and results in the population of the 4G7/2 level. Radiative relaxations from this level to the 4I9/2, 4I11/2 and 4I13/2 multiplets produce visible emission bands in the green, orange and red regions. Excited state absorption from the 4F3/2 to the 2P1/2 state can also occur, giving rise to a blue emission band (2P1/2 to 4I9/2). A rate equation analyses supports the proposed mechanisms.

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Published date: 2006

Identifiers

Local EPrints ID: 38971
URI: http://eprints.soton.ac.uk/id/eprint/38971
ISSN: 0009-2614
PURE UUID: 509cd35a-d30f-4b89-8141-e509861890ee
ORCID for David Shepherd: ORCID iD orcid.org/0000-0002-4561-8184
ORCID for J.S. Wilkinson: ORCID iD orcid.org/0000-0003-4712-1697

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Date deposited: 14 Jun 2006
Last modified: 16 Mar 2024 02:39

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Contributors

Author: F. Lahoz
Author: I.R. Martín
Author: David Shepherd ORCID iD
Author: J.S. Wilkinson ORCID iD
Author: M.A. Hassan

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