Periodically poled RbTiOAsO4 femtosecond optical parametric oscillator tunable from 1.38 to 1.58 mu m

We describe a synchronously pumped optical parametric oscillator based on periodically poled RbTiOAsO4 that is continuously tunable in the signal wavelength from 1.375 to 1.575 mu m and with a maximum output power of 110 mW. The signal pulses were produced with nearly transform-limited duration as short as 215 fs.