Room temperature infrared-laser-induced upconversion in Nd³+ doped Ta₂05 waveguides
Lahoz, F., Martin, I.R., Shepherd, D.P., 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), 198-204. (doi:10.1016/j.cplett.2006.01.076).
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Description/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.
| Item Type: | Article |
|---|---|
| ISSNs: | 0009-2614 (print) |
| Related URLs: | |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering Q Science > QC Physics |
| Divisions: | University Structure - Pre August 2011 > Optoelectronics Research Centre |
| Item ID: | 38971 |
| Date Deposited: | 14 Jun 2006 |
| Last Modified: | 02 Mar 2012 13:50 |
| Contributors: | Lahoz, F. (Author) Martin, I.R. (Author) Shepherd, D.P. (Author) Wilkinson, J.S. (Author) Hassan, M.A. (Author) |
| Date: | 2006 |
| Status: | Published |
| Contact Email Address: | flahoz@ull.es |
| URI: | http://eprints.soton.ac.uk/id/eprint/38971 |
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