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20 February 2017 Frequency down-conversion of 1 μm laser radiation to the mid-IR using non-oxide nonlinear crystals in a cascaded intracavity configuration
Valentin Petrov, Andrey A. Boyko, Nadezhda Y. Kostyukova, Georgi M. Marchev, Valdas Pasiskevicius, Dmitry B. Kolker, Valeriy Badikov, Dmitrii Badikov, Galina Shevyrdyaeva, Andrius Zukauskas, Vladimir Panyutin
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Proceedings Volume 10088, Nonlinear Frequency Generation and Conversion: Materials and Devices XVI; 1008810 (2017) https://doi.org/10.1117/12.2255643
Event: SPIE LASE, 2017, San Francisco, California, United States
Abstract
A singly-resonant OPO (SRO) based on AgGaSe2 (AGSe) intracavity pumped at ~1.85 μm by the signal pulses of a Rb:PPKTP doubly-resonant OPO (DRO) provided extremely broad tuning (5.8 to ~18 μm) for the non-resonated idler. In a similar set-up with the same nonlinear crystals, we studied intracavity difference-frequency generation (DFG). Both AGSe and the new monoclinic crystal BaGa4Se7 (BGSe) generated single pulse energies of ~0.7 mJ near 7 μm at an overall conversion efficiency from the 1.064 μm pump of 1.2%. The main advantage of BGSe is its damage resistivity up to the maximum pump levels applied at 100 Hz.
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Valentin Petrov, Andrey A. Boyko, Nadezhda Y. Kostyukova, Georgi M. Marchev, Valdas Pasiskevicius, Dmitry B. Kolker, Valeriy Badikov, Dmitrii Badikov, Galina Shevyrdyaeva, Andrius Zukauskas, and Vladimir Panyutin "Frequency down-conversion of 1 μm laser radiation to the mid-IR using non-oxide nonlinear crystals in a cascaded intracavity configuration", Proc. SPIE 10088, Nonlinear Frequency Generation and Conversion: Materials and Devices XVI, 1008810 (20 February 2017); https://doi.org/10.1117/12.2255643
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KEYWORDS
Crystals
Optical parametric oscillators
Mid-IR
Nonlinear crystals
Mirrors
Quantum efficiency
Signal attenuation
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