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Room temperature infrared-laser-induced upconversion in Nd3+ doped Ta205 waveguides

Lahoz, F., Martín, I.R., Shepherd, David, Wilkinson, J.S. and Hassan, M.A. (2006) Room temperature infrared-laser-induced upconversion in Nd3+ doped Ta205 waveguides Chemical Physics Letters, 421, (1-3), pp. 198-204.

Record type: Article


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


Local EPrints ID: 38971
ISSN: 0009-2614
PURE UUID: 509cd35a-d30f-4b89-8141-e509861890ee
ORCID for David Shepherd: ORCID iD
ORCID for J.S. Wilkinson: ORCID iD

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Date deposited: 14 Jun 2006
Last modified: 29 Sep 2017 22:32

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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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