title: Multi-wavelength Yb:YAG/Nd3+:YVO4continuous-wave microchip Raman laser.
abstract: Multi-wavelength continuous-wave (CW) Raman lasers in a laser diode pumped Yb:YAG/Nd3+:YVO4microchip Raman laser have been demonstrated for the first time to our best knowledge. The multi-wavelength laser of the first Stokes radiation around 1.08 μm has been achieved with a Raman shift of 261  cm-1for a-cut Nd:YVO4crystal corresponding to the fundamental wavelength at 1.05 μm. Multi-wavelength laser operation simultaneously around 1.05 and 1.08 μm has been achieved under the incident pump power between 1.5 and 1.7 W. Multi-wavelength Raman laser with frequency separation of 1 THz around 1.08 μm has been obtained when the incident pump power is higher than 1.7 W. The maximum Raman laser output power of 260 mW at 1.08 μm is obtained and the corresponding optical-to-optical conversion efficiency is 4.2%. Elliptically polarized fundamental laser and linearly polarized Raman laser were observed in an Yb:YAG/Nd:YVO4CW microchip Raman laser. The experimental results of linearly polarized, multi-wavelength Yb:YAG/Nd:YVO4CW microchip Raman laser with adjustable frequency separation provide a novel approach for developing potential compact laser sources for Terahertz generation.
authors.forename: Xiao-Lei
authors.initials: XL
authors.lastname: Wang
authors.forename: Jun
authors.initials: J
authors.lastname: Dong
authors.forename: Xiao-Jie
authors.initials: XJ
authors.lastname: Wang
authors.forename: Jie
authors.initials: J
authors.lastname: Xu
authors.forename: Ken-Ichi
authors.initials: K
authors.lastname: Ueda
authors.forename: Alexander A
authors.initials: AA
authors.lastname: Kaminskii