title: 2.5 W orange power by frequency conversion from a dual-gain quantum-dot disk laser.
abstract: We report a disk laser using two quantum-dot semiconductor gain elements, resulting in what we believe is the first demonstration of intracavity frequency conversion with these active media. Output power of 6 W has been obtained in dual-gain configuration at a wavelength of 1180 nm, while single-gain lasers produced up to 3 and 4 W individually, limited by thermal rollover in the output characteristics. The gain enhancement achieved with two active elements comprising 39 layers of Stranski-Krastanov InGaAs quantum dots allows for intracavity frequency doubling delivering 2.5 W of orange radiation.
authors.affiliation: Optoelectronics Research Centre, Tampere University of Technology, Korkeakoulunkatu 3, 33720 Tampere, Finland. jussi.rautiainen@tut.fi
authors.forename: Jussi
authors.initials: J
authors.lastname: Rautiainen
authors.forename: Igor
authors.initials: I
authors.lastname: Krestnikov
authors.forename: Jari
authors.initials: J
authors.lastname: Nikkinen
authors.forename: Oleg G
authors.initials: OG
authors.lastname: Okhotnikov