We describe the operating characteristics of a femtosecond optical par
ametric oscillator employing chirped mirrors for intracavity group-vel
ocity dispersion compensation. Pumped by 760 mW of power from a self-m
ode-locked Ti:sapphire laser, this device provides 100-fs near-transfo
rm-limited pulses continuously tunable from 1.18 to 1.32 mu m with an
average power of 100-180 mW. The limitations of the present setup and
strategies for further pulse shortening are discussed.