INFRARED QUANTUM COUNTER ACTION IN Ho-DOPED CRYSTALS
- 15 December 1967
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 11 (12) , 389-391
- https://doi.org/10.1063/1.1728225
Abstract
Infrared quantum counter action of Ho3+ in CaWO4, SrWO4, NaLa(WO4)2, CaMoO4, CdF2, and YAG single crystals is reported for the first time. A new two‐step excitation is also reported for Ho3+ in CaF2. Total quantum efficiencies were experimentally calculated for some of the stronger processes, and one of these is compared to a theoretical estimate for the internal quantum efficiency.Keywords
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