We investigate the first-Stokes operation of YVO₄ crystal driven by an acousto-optic Q-switched Nd:YAP laser with X(ZZ)X Raman configuration. The fundamental wavelength laser operation by Nd:YAP crystal was at 1080 nm corresponding to the first-Stokes wavelength at 1195 nm based on the Raman shift of 890 cm⁻¹ in a-cut YVO₄ crystal. Under an incident pump power of 8 W and a pulse repetition frequency of 25 kHz, an average output power of 1.24 W and a pulse width of 2.9 ns were achieved with the conversion efficiency up to 15.5%. In the experiment, the weak Stokes at 1125 nm converted with a low wave-number Raman shift of 376 cm⁻¹ was also detected.

中文翻译：

---

1195 nm处的高效有源Q开关Nd：YAP / YVO 4拉曼激光操作

我们研究了具有X（ZZ）X拉曼配置的声光Q开关Nd：YAP激光器驱动的YVO ₄晶体的第一斯托克斯操作。由钕基波波长激光器操作：YAP晶体是在基于890厘米拉曼位移对应1080纳米至第一斯托克斯波长在1195纳米^{- 1}在一个-cut YVO ₄晶体。在8 W的入射泵浦功率和25 kHz的脉冲重复频率下，平均输出功率为1.24 W，脉冲宽度为2.9 ns，转换效率高达15.5％。在实验中，还检测到了在1125 nm处的弱斯托克斯，并通过376 cm ^{- 1}的低波数拉曼位移进行了转换。