title: Direct generation of a first-Stokes vortex laser beam from a self-Raman laser.
abstract: We demonstrate the direct generation of a first-order LG(01) Laguerre Gaussian (vortex) mode operating at the first-Stokes wavelength of a diode end-pumped, Nd:GdVO(4) self-Raman laser. To the best of our knowledge, this is the first report of intracavity stimulated Raman scattering (SRS) being used as a method for frequency conversion of a vortex laser beam and it is effective in enabling the frequency-converted (Stokes) beam to have the same LG(01) mode as the fundamental beam.
authors.affiliation: MQ Photonics Research Centre, Department of Physics and Astronomy, Macquarie University, NSW 2109, Australia. andrew.lee@mq.edu.au
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Lee
authors.forename: Takashige
authors.initials: T
authors.lastname: Omatsu
authors.forename: Helen M
authors.initials: HM
authors.lastname: Pask
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D053844:Lasers, Solid-State; D013059:Spectrum Analysis, Raman / Q000295:instrumentation*