Tsang, YH, Binks, DJ, Richards, BDO et al. (1 more author) (2011) Spectroscopic and lasing studies of Ce3+:Er3+:Yb3+:YVO4 crystals. Laser Physics Letters, 8 (10). 729 - 735. ISSN 1612-2011
Abstract
Absorption and fluorescence spectra and fluorescence lifetime measurements are presented for Ce3+:Er3+:Yb3+:YVO4 crystals and compared to the corresponding data for Er3+:Yb3+:YVO4 crystals. These results show that doping with Ce3+ ions reduces the lifetime of the 4I11/2 state of Er3+ and thereby both suppresses upconversion from this state and improves the energy transfer efficiency from Yb3+ to Er3+. Lasing from this material is also demonstrated for this first time, both in quasi-continuous wave (QCW) and Q-switched modes. To obtain laser action at ~ 1.5 μm, the Ce3+:Er3+:Yb3+:YVO4 crystals were pumped by laser diodes operating at ~ 0.98 μm. For QCW operation, a slope efficiency of 2.6% and a threshold of 12 W were obtained. Q-switched pulses of 27 μJ energy and 52 μs pulse to pulse duration were also measured.
Metadata
| Authors/Creators: |
|
|---|---|
| Keywords: | spectroscopy; ytterbium; erbium; cerium; YVO4; yttrium orthovanadate; lasers; quantum fluorescence yield; switched CE/ND/YAG laser; 980 NM excitation; MU-M; saturable absorber; continuous-wave; ND/YVO4 laser; green laser; CE3+ IONS; ER3+ |
| Dates: |
|
| Institution: | The University of Leeds |
| Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) > Institute for Materials Research (Leeds) |
| Depositing User: | Symplectic Publications |
| Date Deposited: | 12 Feb 2014 10:42 |
| Last Modified: | 12 Feb 2014 10:42 |
| Published Version: | http://dx.doi.org/10.1002/lapl.201110056 |
| Status: | Published |
| Publisher: | Institute of Physics |
| Identification Number: | https://doi.org/10.1002/lapl.201110056 |
CORE (COnnecting REpositories)
CORE (COnnecting REpositories)