A. Shirakawa et al., HIGHLY EFFICIENT GENERATION OF BLUE-ORANGE FEMTOSECOND PULSES FROM INTRACAVITY-FREQUENCY-MIXED OPTICAL PARAMETRIC OSCILLATOR, Optics communications, 123(1-3), 1996, pp. 121-128
The second harmonic generation of the signal or sum frequency generati
on of the signal and pump in a beta-BaB2O4 crystal in the cavity of an
optical parametric oscillator pumped synchronously by a mode-locked T
i:sapphire laser is reported. Visible femtosecond pulses with an avera
ge power of 330 mW are generated with a pumping power of 1.3 W. Broad
tunability is achieved from 426 to 483 nm and 520 to 585 nm using a si
ngle mirror set.