OPTICAL PARAMETRIC OSCILLATOR WITH SERVO-CONTROLLED OPTICAL CAVITY AND ASSOCIATED METHOD

摘要

Disclosed is an optical parametric oscillator that comprises an optical cavity, a pump laser (1), an intra-cavity non-linear optical crystal (5), a modulation device configured to electro-optically modulate the non-linear optical crystal (5) itself, and an active servo-control system comprising: - a modulation device generating a modulation signal configured to electro-optically modulate the non-linear optical crystal (5) itself, - a detection system configured to detect a signal representative of a power of the signal and/or complementary pulses generated at the output of the optical parametric oscillator, as a function of the modulation signal (71), - a computer configured to calculate an error signal representative of a difference between a predetermined maximum power value of the signal and/or complementary pulses and the detected power signal as a function of time, and - a feedback device configured to modify the optical length of the optical cavity of the optical parametric oscillator as a function of the error signal.