We present a characterization of the configuration and operation of an intracavity-frequency-doubled femtosecond optical parametric oscillator based on the new nonlinear crystal RbTiOAsO<sub>4</sub>. Using a Brewster-cut 200-μm-thick crystal of β-BaB<sub>2</sub>O<sub>4</sub>, we have generated transform-limited visible pulses tunable from 620 to 660 nm by tuning the Ti:sapphire pump laser alone. Average output powers of 170 mW in pulses with durations as short as 60 fs have been generated at a 85-MHz repetition rate.
© 1995 Optical Society of America
D. T. Reid, M. Ebrahimzadeh, and W. Sibbett, "Efficient femtosecond pulse generation in the visible in a frequency-doubled optical parametric oscillator based on RbTiOAsO4," J. Opt. Soc. Am. B 12, 1157-1163 (1995)