Optical parametric oscillator at MID-IR spectral region based on periodically polled LiNbO3 pumped by Tm3+:Lu2O3 ceramic laser
D.B. Kolker1,2, O.L. Antipov3, S.V. Larin4, L.I. Isaenko2,5, V.N. Vedenyapin2,5, A.R. Ahmatkhanov6, V.Ya. Shur6
1Institute of Laser Physics SB RAS, Novosibirsk, Russia
2National Research Novosibirsk State University, Novosibirsk, Russia
3Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod , Russia
4IRE-POLYUS, Fryazino, Russia
5V.S. Sobolev Institute of Geology and Mineralogy of the Siberian Branch of the RAS, Novosibirsk, Russia
6Ural Federal University named after the first President of Russia B.N. Yeltsin, Ekaterinburg, Russia
Keywords: параметрический генератор света, периодически поляризованная структура, средний ИК-диапазон, Tm:LuO-лазер, optical parametric oscillator, periodically-polled structure, mid-infrared, PPMgO:LN
Abstract
Optical parametric oscillator based on periodically polled MgO:LiNbO3 pumped by repetitively-pulsed Tm3+:Lu2O3 ceramic laser with a fiber-laser pumping was experimentally studied. The average power at the spectral range of 3.7-4.2 mm at the OPO output was 530 mW at the power of 7.9 W of the ceramic laser. The full efficiency of energy conversion from NIR-IR to MID-IR was 6.7% and differential efficiency was 8%. For parametric conversion of two-micron radiation from lasers (for example, on Tm3+:Lu2O3 ceramics or Ho3+:YAG crystals) into the mid-IR range, KTP and KTA crystals with regular domain structures are also promising.
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