uv fluorescence of cerium-doped lutetium and lanthanum trifluorides, potential tunable coherent sources from 2760 to 3220 Å
- 1 November 1977
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 31 (9) , 594-596
- https://doi.org/10.1063/1.89792
Abstract
Broad‐band uv flurescence is reported for LaF2 : Ce3+ (2760–3120 Å) and LuF3 : Ce3+ (2880–3220 Å). The five‐peak excitation spectrum expected for the 5d state of Ce3+ in a noncubic crystal field is observed. The fluorescence quantum yields for LaF3 : 1% Ce3+ and LuF3 : 0.1% Ce3+ are 0.9 and 0.82, respectively. Estimates of the threshold power for lasing action suggest that a laser system tunable from 2760 to 3220 Å is feasible with noble‐gas–halide lasers as pumping sources.Keywords
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