1.
Opt Express
; 29(20): 31156-31163, 2021 Sep 27.
Article
in English
| MEDLINE
| ID: mdl-34615215
ABSTRACT
We demonstrated an eye-safe diamond Raman laser intra-cavity pumped by the 1.3 µm fundamental field for the first time, to the best of our knowledge. The first-Stokes laser at 1634 nm was converted from the 1342 nm fundamental laser, which was produced by an in-band pumped double-end diffusion-bonded a-cut Nd:YVO4 crystal. Under an incident pump power of 21.2 W and an optimal pulse repetition frequency of 25 kHz, the maximum average output power of 2.0 W was obtained with the pulse duration of 5.7 ns and the peak power of 14 kW. The first-Stokes emission was found to be near diffraction limited (M2 ≈ 1.3) and to have a narrow linewidth (â¼0.05 nm FWHM; instrument limited).