Dual-frequency continuous wave optical parametric oscillator

Bingjie Sun; Xin Wang; Suhui Yang; Kun Li

doi:10.1117/12.2295561

12 January 2018 Dual-frequency continuous wave optical parametric oscillator

Bingjie Sun, Xin Wang, Suhui Yang, Kun Li

Proceedings Volume 10619, 2017 International Conference on Optical Instruments and Technology: Advanced Laser Technology and Applications; 106190U (2018) https://doi.org/10.1117/12.2295561
Event: International Conference on Optical Instruments and Technology 2017, 2017, Beijing, China

Abstract

This article shows a dual-frequency OPO with multi-grating (28.5-31.5 μm) periodically poled MgO:LiNbO₃ (MgO:PPLN) pumped by a dual-frequency continuous wave at 1.064 μm. The wavelengths of idler and signal varying versus temperature at different periods of inverted domains were numerical simulated. It proves that as the temperature rises, or as the poling period increases, the idler wavelength shortens and signal wavelength lengthens. The pump is a 30 W dual-frequency fiber laser MOPA with beat note frequency varying from 125 MHz to 175 MHz. The pump threshold of the bow-tie ring cavity OPO was 3 W. An average dual-frequency idler output power of 2.6 W was obtained when the pump power was 17.2 W at 45 °C. The idler wavelength was 3.4 μm when the poling period was 30.5 μm. The idler wavelength could be tuned from 2.9 μm to 3.9 μm by changing the temperature and the poling period, and the beat note frequency was proved to be equal to that of the pump.

Citation Download Citation

Bingjie Sun, Xin Wang, Suhui Yang, and Kun Li "Dual-frequency continuous wave optical parametric oscillator", Proc. SPIE 10619, 2017 International Conference on Optical Instruments and Technology: Advanced Laser Technology and Applications, 106190U (12 January 2018); https://doi.org/10.1117/12.2295561

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KEYWORDS

Optical parametric oscillators

Laser countermeasures

Fiber amplifiers

Mid-IR

Fiber lasers

Mirrors

Optical amplifiers

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