title: An intracavity, frequency-doubled self-Raman vortex laser.
abstract: We demonstrate intracavity frequency doubling of the self-Raman field generated within a diode end-pumped, solid state Nd:GdVO(4) vortex laser. A maximum output power of 727 mW is generated at 586 nm with an overall diode-to-yellow conversion efficiency of 4%. Conservation of orbital angular momentum is observed under intracavity frequency doubling, with the topological charge of the yellow beam being twice that of the Stokes beam.
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Lee
authors.forename: Chunyu
authors.initials: C
authors.lastname: Zhang
authors.forename: Takashige
authors.initials: T
authors.lastname: Omatsu
authors.forename: Helen M
authors.initials: HM
authors.lastname: Pask