title: Efficient concept for generation of diffraction-limited green light by sum-frequency generation of spectrally combined tapered diode lasers.
abstract: In order to increase the power of visible diode laser systems in an efficient manner, we propose spectral beam combining with subsequent sum-frequency generation. We show that this approach, in comparison with second harmonic generation of single emitters, can enhance the available power significantly. By combining two distributed Bragg reflector tapered diode lasers we achieve a 2.5-3.2 fold increase in power and a maximum of 3.9 W of diffraction-limited green light. At this power level, green diode laser systems have a high application potential, e.g., within the biomedical field. Our concept can be expanded combining multiple diode lasers to increase the power even further.
authors.affiliation: DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark, Roskilde, Denmark. amul@fotonik.dtu.dk
authors.forename: André
authors.initials: A
authors.lastname: Müller
authors.forename: Ole Bjarlin
authors.initials: OB
authors.lastname: Jensen
authors.forename: Karl-Heinz
authors.initials: KH
authors.lastname: Hasler
authors.forename: Bernd
authors.initials: B
authors.lastname: Sumpf
authors.forename: Götz
authors.initials: G
authors.lastname: Erbert
authors.forename: Peter E
authors.initials: PE
authors.lastname: Andersen
authors.forename: Paul Michael
authors.initials: PM
authors.lastname: Petersen