1st-Stokes and 2nd-Stokes multi-wavelength continuous-wave operation in Nd:YVO4/BaWO4 Raman laser under in-band pumping [Early Posting]
A continuous-wave Nd:YVO4/BaWO4 Raman laser generating simultaneous multi-wavelength 1st-Stokes and 2nd-Stokes emissions is demonstrated for the first time. Investigations concerning different pump spot sizes and crystal lengths were conducted to improve thermal effect and pump absorption. Three 1st-Stokes lasers at 1103.6, 1175.9, 1180.7 nm and two 2nd-Stokes lasers at 1145.7, 1228.9 nm are obtained simultaneously using the Raman shifts of 925 cm-1, 332 cm-1 in BaWO4 and 890 cm-1 in YVO4. At the incident pump power of 23.1 W, 1.24 W of the maximum Raman output power is achieved, corresponding to an optical conversion efficiency of 5.4%. We also present a theoretical analysis of the competition between different Stokes lines.
作者单位：University of Ottawa
Fan Li,Wang Xiaoyu,Zhao Xiaodong,Wang Jianhui,Shen Jun,Fan Huibo,Zhu Jun,Shen Mingya. 1st-Stokes and 2nd-Stokes multi-wavelength continuous-wave operation in Nd:YVO4/BaWO4 Raman laser under in-band pumping[J].Chinese Optics Letters,2020,18(11):11.