Abstract

We describe configurations of a novel synchronously pumped femtosecond optical parametric oscillator based on the crystal RbTiOAsO₄ 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 $\mathit{\mu }\mathrm{m}$, and a characterization of the signal output using frequency-resolved optical gating implies asymmetric near-${\mathrm{sech}}^2\left(t\right)$ intensity-profile pulses with significant amounts of spectral cubic phase.

© 1997 Optical Society of America

Broadly tunable infrared femtosecond optical parametric oscillator based on periodically poled RbTiOAsO₄

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