High rate pulse generation from InGaAsP laser in selfoc lens external resonator

Abstract
High rate modulation of an InGaAsP diode laser at rates of 5–10 GHz was demonstrated using a selfoc microlens external resonator. At a rate of 5.3 GHz modelocked pulses of 30 ps duration were obtained, whereas deeply modulated output was observed at 8.1 and 9.4 GHz rates.