Green infrared-pumped erbium upconversion laser
- 14 December 1987
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 51 (24) , 1977-1979
- https://doi.org/10.1063/1.98316
Abstract
An upconversion pumping scheme was used to produce cw laser action at 0.55 μm in YAlO3:Er3+ at temperatures up to 77 K on the 4S3/2→4I15/2 transition. Two infrared dye lasers at 792.1 and 839.8 nm were used as the pump sources for stepwise two-photon excitation of the 4S3/2 upper laser level at 18 406 cm−1. The laser operates in the fundamental TEM00 mode, and a cw output power of ∼1 mW was achieved with ∼200 mW pump power from each infrared dye laser.Keywords
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