Lee Andrew J, Omatsu Takashige, Pask Helen M
MQ Photonics Research Centre, Department of Physics and Astronomy, Macquarie University, NSW 2109, Australia.
Opt Express. 2013 May 20;21(10):12401-9. doi: 10.1364/OE.21.012401.
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.
