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Published on: July 12, 2017
Efficient, resonantly pumped, room-temperature Er3+:GdVO4 laser
N Ter-Gabrielyan1, V Fromzel, W Ryba-Romanowski
1US Army Research Laboratory, Adelphi, Maryland 20783, USA. nikolay.e.tergabrielyan.civ@mail.mil
Abstract:
We report an efficient room-temperature operation of a resonantly pumped Er3+:GdVO4 laser at 1598.5 nm. The maximum continuous wave (CW) output power of 3.5 W with slope efficiency of 56% was achieved with resonant pumping by an Er-fiber laser at 1538.6 nm. With pumping by a commercial laser diode bar stack, a quasi-CW (QCW) output of 7.7 W and maximum slope efficiency of ~53% versus absorbed pump power were obtained. This is believed to be the first resonantly (in-band) pumped, room-temperature Er3+:GdVO4 laser.
