We demonstrate a sub-nanosecond, high peak power Yb:YAG/Cr⁴⁺:YAG/YVO₄ passively Q-switched Raman micro-laser (PQSRML) operating at 1134 nm. The effect of transmission of the output coupler (T_OC) and Cr⁴⁺:YAG initial transmission (T₀) on the Raman laser performance have been investigated. Stable Raman laser pulse trains have been observed for Yb:YAG/Cr⁴⁺:YAG/YVO₄ PQSRMLs with different combinations of output couplers and Cr⁴⁺:YAG crystals. Maximum average output power of Raman laser was 142.8 mW with T_OC = 11% output coupler and T₀ = 90% Cr⁴⁺:YAG. Enhanced Stokes pulse performance of 24.1 μJ, 45.1 kW, 535 ps was achieved with T_OC = 16% and T₀ = 85% Cr⁴⁺:YAG. A modified Raman laser rate equation model is established and the theoretically calculated results are in fairly good agreement with experimental results.

我们演示了一个亚纳秒级，高峰值功率Yb：YAG / Cr ⁴⁺：YAG / YVO ₄被动调Q开关拉曼微激光器（PQSRML），其工作频率为1134 nm。研究了输出耦合器的透射率（T _OC）和Cr ⁴⁺：YAG初始透射率（T ₀）对拉曼激光性能的影响。对于Yb：YAG / Cr ⁴⁺：YAG / YVO ₄ PQSRML，已经观察到具有不同输出耦合器和Cr ⁴⁺：YAG晶体组合的稳定拉曼激光脉冲序列。在T _OC  = 11％输出耦合器和T _{0的情况下}，拉曼激光器的最大平均输出功率为142.8 mW = 90％Cr ⁴⁺：YAG。在T _OC  = 16％和T ₀  = 85％Cr ⁴⁺：YAG的情况下，实现了24.1μJ，45.1 kW，535 ps的增强的斯托克斯脉冲性能。建立了改进的拉曼激光速率方程模型，理论计算结果与实验结果吻合较好。