Actively mode-locked optical parametric oscillator.
We report on what we believe to be the first demonstration of active mode locking of an optical parametric oscillator. An acousto-optic modulator is inserted into a nearly degenerate (approximately 1064 nm) and doubly resonant optical parametric oscillator based on periodically poled LiNbO3 and pumped with the second harmonic of a quasi-continuous-wave single-frequency Nd:YAG laser. When the modulation frequency is matched to the free spectral range of the cavity (120 MHz), a pulsed regime is observed, with pulse durations as short as 700 ps.
Forget
Nicolas
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Laboratoire Aimé Cotton, Centre National de la Recherche Scientifique, UPR 3321, Campus d'Orsay, Bâtiment 505, 91405 Orsay, France., and O nicolas.forget@polytechnique.fr
Bahbah
Sofiane
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Drag
Cyril
C
Bretenaker
Fabien
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Lefèbvre
Michel
M
Rosencher
Emmanuel
E