title: Continuous-wave VECSEL Raman laser with tunable lime-yellow-orange output.
abstract: We report a compact CW KGW Raman laser with intracavity nonlinear mixing, pumped by the intracavity field of a VECSEL. By temperature tuning an intracavity LBO crystal, we obtained two separate tunable emissions bands, namely 548.5 - 566 nm for sum-frequency-generation (SFG) of the fundamental and Stokes wavelengths, and 577.5 - 596 nm for second-harmonic-generation (SHG) of the Stokes wavelength. The maximum output powers for SFG and SHG were 0.8 W @ 560 nm and 0.52 W @ 592.5 nm, with corresponding diode-to-visible optical conversion efficiencies of 4.2% and 2.9%. These preliminary results show strong potential for expanding the spectral coverage of VECSEL lasers.
authors.affiliation: MQ Photonics, Department of Physics and Astronomy, Macquarie University, Sydney, New South Wales 2109, Australia. jipeng.lin@mq.edu.au
authors.forename: Jipeng
authors.initials: J
authors.lastname: Lin
authors.forename: Helen M
authors.initials: HM
authors.lastname: Pask
authors.forename: David J
authors.initials: DJ
authors.lastname: Spence
authors.forename: Craig J
authors.initials: CJ
authors.lastname: Hamilton
authors.forename: Graeme P A
authors.initials: GP
authors.lastname: Malcolm
mesh_terms: D003116:Color; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007834:Lasers; D013059:Spectrum Analysis, Raman / Q000295:instrumentation*