Picosecond surface-emitting semiconductor laserwith> 200 mW average power

Abstract
A passively modelocked diode-pumped surface-emitting semiconductor laser at 950 nm with a 2 GHz repetition rate is reported. Compared to the first device of this kind, which the authors recently reported, a greatly improved average output power of 213 mW and a reduced pulse duration of 3.2 ps are achieved. The device consists of an optically pumped semiconductor gain structure and a semiconductor saturable absorber mirror (SESAM) in an external cavity.