title: External-cavity, actively mode-locked grating-coupled surface-emitting laser and amplification characteristics of a grating-coupled semiconductor optical amplifier.
abstract: An external-cavity, actively mode-locked grating-coupled surface-emitting semiconductor laser (GCSEL) is demonstrated for the first time to the authors' knowledge. The mode-locked oscillator generates a train of optical pulses at a 297-MHz pulse-repetition frequency. The optical pulse from the oscillator has a width of 22.6 ps and a spectral bandwidth of 0.07 nm at 975.9 nm, giving a time-bandwidth product of 0.50. In addition, amplification characteristics of a grating-coupled semiconductor optical amplifier are studied with a continuous-wave external-cavity GCSEL.
authors.affiliation: Ultrafast Photonics Group, School of Optics, Center for Research and Education in Optics and Lasers, University of Central Florida, 4000 Central Florida Boulevard, Orlando, Florida 32816-2700, USA. kkim@creol.ucf.edu
authors.forename: Kyungbum
authors.initials: K
authors.lastname: Kim
authors.forename: Shinwook
authors.initials: S
authors.lastname: Lee
authors.forename: Oleg
authors.initials: O
authors.lastname: Smolski
authors.forename: Peter J
authors.initials: PJ
authors.lastname: Delfyett