利用Nd:YVO4激光晶体的自受激拉曼效应, 结合Cr:YAG被动锁模技术和倍频技术, 实现了结构紧凑的1176 nm和588 nm黄光锁模激光输出。激光器为LD端面泵浦, 三镜折叠腔结构, 并且采用了透过率为10%的输出镜。Nd:YVO4晶体长度为10 mm, Nd3+离子掺杂质量分数为0.2%, Cr:YAG晶体的初始透过率为67%。10 W激光泵浦时, 1176 nm激光平均输出功率为123 mW, 调Q包络宽度为6 ns, 调Q包络内的锁模脉冲重复频率高达1 GHz。588.2 nm 黄光的平均输出功率为8 mW。

Based on the self-stimulated Raman scattering of Nd:YVO4 laser crystal, combined with Cr:YAG passive mode-locking technology and frequency doubling technology, compact 1176 nm and 588 nm yellow laser mode locking was realized. A folded laser cavity with three mirrors and an output coupler with 10% transmittance were designed in the laser diode end-pumped laser. The Nd3+ concentration and length of the Nd:YVO4 crystal were 0.2% and 10 mm, respectively, and the initial transmission of Cr:YAG at 1064 nm was 67%. At 10 W incident pump power the average output power was 123 mW and the duration of Q-switched envelope was only 6.0 ns with the mode-locked pulse repetition rate of 1.0 GHz. The average output power of 588.2 nm yellow laser was about 8 mW. An effective method for achieving mode-locked yellow lasers was provided.