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4 March 2022 High-energy, narrowband, non-resonant PPKTP optical parametric oscillator
Andrey A. Boyko, Li Wang, Oussama Mhibik, Ivan B. Divliansky, Andrius Zukauskas, Kjell Moelster, Weidong Chen, Leonid B. Glebov, Valdas Pasiskevicius, Valentin Petrov
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Proceedings Volume 11985, Nonlinear Frequency Generation and Conversion: Materials and Devices XXI; 119850G (2022) https://doi.org/10.1117/12.2613384
Event: SPIE LASE, 2022, San Francisco, California, United States
Abstract
We present a narrowband, non-resonant optical parametric oscillator based on 5-mm thick Rb-doped periodically-poled KTiOPO4 (PPKTP) operating in the high-energy/low repetition-rate regime. An uncoated volume Bragg grating (VBG) is employed as one of the cavity mirrors reflecting only the signal whereas the other cavity mirror is reflecting only the idler. Pumping by a Nd:YAG laser at 1.0642 μm in a double-pass, the signal plus idler output energy reached almost 5 mJ at a repetition rate of 100 Hz corresponding to a conversion efficiency of ⁓26%. Both signal and idler are narrowband with full width at half maximum (FWHM) of 0.5 nm at 1942 nm and 0.76 nm at 2355 nm, respectively.
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Andrey A. Boyko, Li Wang, Oussama Mhibik, Ivan B. Divliansky, Andrius Zukauskas, Kjell Moelster, Weidong Chen, Leonid B. Glebov, Valdas Pasiskevicius, and Valentin Petrov "High-energy, narrowband, non-resonant PPKTP optical parametric oscillator", Proc. SPIE 11985, Nonlinear Frequency Generation and Conversion: Materials and Devices XXI, 119850G (4 March 2022); https://doi.org/10.1117/12.2613384
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KEYWORDS
Optical parametric oscillators
Mid-IR
Nonlinear crystals
Volume Bragg gratings
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