LD end-pumped passively Q-switched a-cut Nd:YLF/Cr:YAG/c-cut YVO₄ Raman laser is investigated for the first time, and SRS processes of 895 cm⁻¹(A_1g), 821 cm⁻¹ (B_1g) and 264 cm⁻¹ (B_2g) modes are realized. Raman laser output power, temporal, spectral and polarization features are studied, and unusual phenomena of Raman laser output are observed for the first time. The maximum efficient Raman conversions of 895 cm⁻¹ (A_1g), 821 cm⁻¹ (B_1g) and 264 cm⁻¹ (B_2g) modes are achieved with the linearly polarized direction of E_p to be about 45 degrees to a or b axis of c-cut YVO₄ crystal. The optical axis orientation of c-cut YVO₄ crystal significantly affect Raman laser spectra and polarization features. With experiments and analysis in-depth, these anomalies are attributed to optical axis direction deviation of c-cut YVO₄ crystal. These findings can help design c-cut YVO₄ multi-Raman mode lasers of high-performance, which have potential applications.

首次研究LD端泵浦被动调Q a切Nd:YLF/Cr:YAG/ c切YVO _{4拉曼激光器，并获得895 cm} ^-1 ( A _1g )、821 cm ^-1的SRS过程实现了( B _1g )和264 cm ^-1 ( B _{2g )模式。}研究了拉曼激光输出功率、时间、光谱和偏振特性，首次观察到拉曼激光输出的异常现象。^{895 cm -1} ( A _1g )、821 cm ^-1 ( B _1g ) 和 264 cm ^-1 ( B _2g ) 模式的最大有效拉曼转换是在E _p的线偏振方向与a成约 45 度的情况下实现的。或c切YVO _4晶体的b轴。c切YVO ₄晶体的光轴取向显着影响拉曼激光光谱和偏振特性。通过深入的实验和分析，这些异常现象归因于c切YVO ₄晶体的光轴方向偏差。这些发现有助于设计具有潜在应用前景的高性能c -cut YVO ₄多拉曼模激光器。