Continuous-wave, fourfold upconversion laser
- 6 December 1993
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 63 (23) , 3125-3127
- https://doi.org/10.1063/1.110224
Abstract
We report a new Er3+:LiYF4 cryogenic upconversion laser pumped by a fourfold upconversion process. Excitation at 1.5 μm results in laser emission at 701.5 nm on a transition with an upper state at nearly four times the pump photon energy. Mechanisms and the concept of cooperative upconversion enhancement are examined.Keywords
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