TUNABLE SUM-FREQUENCY GENERATION BASED ON A CONTINUOUS-WAVE SELF-SWEEPING FIBER LASER
A. A. Krivonosov, A. Yu. Tkachenko, N. R. Poddubrovskii, S. I. Kablukov
Institute of Automation and Electrometry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: nonlinear frequency conversion, sum-frequency generation, self-sweeping laser, tunable radiation
Abstract
This work demonstrates for the first time sum-frequency generation (SFG) based on a continuous-wave Yb-doped self-sweeping fiber laser. The use of a self-sweeping laser in the SFG process enables the development of frequency-tunable radiation sources. Synchronization of the self-sweeping laser radiation with that of a microchip laser is demonstrated. SFG near 532 nm with a tuning range of up to 50 pm is achieved. The peak power obtained is 11 mW, corresponding to a quantum conversion efficiency of approximately 2 % for the self-sweeping laser radiation. The demonstrated approach can be adapted for difference-frequency generation (including terahertz radiation) and is promising for spectroscopic applications.
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