Ma Hou-Jie, Wei Xin, Dai Shi-Bo, Yin Hao, Zhu Si-Qi, Li Zhen, Chen Zhen-Qiang
Opt Express. 2021 Sep 27;29(20):31156-31163. doi: 10.1364/OE.439098.
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:YVO 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 (M ≈ 1.3) and to have a narrow linewidth (∼0.05 nm FWHM; instrument limited).
据我们所知，我们首次展示了一种由1.3μm基频光腔内泵浦的人眼安全金刚石拉曼激光器。1634nm的一阶斯托克斯激光器是由1342nm的基频激光器转换而来，该基频激光器由带内泵浦的双端扩散键合a切割Nd:YVO晶体产生。在21.2W的入射泵浦功率和25kHz的最佳脉冲重复频率下，获得了2.0W的最大平均输出功率，脉冲持续时间为5.7ns，峰值功率为14kW。发现一阶斯托克斯发射接近衍射极限（M≈1.3），并且具有窄线宽（~0.05nm半高宽；仪器限制）。
