Tunable mode-locked semiconductor laser with Bragg mirror external cavity

We present a simplified design for a wavelength tunable external cavity mode-locked laser by employing a wedged GaAs/AlGaAs Bragg mirror. The device emits 4-6 ps pulses at 10 GHz and is tunable over 15 nm. Although, in the present configuration, tunability is limited to 15 nm, however, we have shown the potential of a tuning range above 100 nm in a single mechanical stable device.