Hybrid modelocking of external cavity with grating-coupled surface emitting laser

Abstract

A hybridly modelocked grating-coupled surface-emitting laser (GCSEL) with pulse duration 2.8psec at 980nm is demonstrated. The unpumped grating section of the GCSEL is used as a saturable absorber to generate pulses with a 535MHz repetition rate. The peak power of 0.31W and a spectral bandwidth of 1.1nm are obtained.