title: Compact, efficient 344-MHz repetition-rate femtosecond optical parametric oscillator.
abstract: We describe configurations of a novel synchronously pumped femtosecond optical parametric oscillator based on the crystal RbTiOAsO(4) and operating with a signal-pulse-repetition frequency as high as 344 MHz. Average signal powers as high as 600 mW and pulse durations of 78 fs are demonstrated at a wavelength of 1.25 microm, and a characterization of the signal output using frequency-resolved optical gating implies asymmetric near-sech(2)(t) intensity-profile pulses with significant amounts of spectral cubic phase.
authors.forename: D T
authors.initials: DT
authors.lastname: Reid
authors.forename: C
authors.initials: C
authors.lastname: McGowan
authors.forename: W
authors.initials: W
authors.lastname: Sleat
authors.forename: M
authors.initials: M
authors.lastname: Ebrahimzadeh
authors.forename: W
authors.initials: W
authors.lastname: Sibbett