We experimentally demonstrated the manipulation of the polarization states of the fundamental frequency light and first-order Stokes light in a c-cut Nd:YVO₄ passive Q-switched self-Raman laser. Stable output of 1066 nm and 1178 nm linearly polarized dual-wavelength lasers is achieved without any polarizing element, including the special cases where the two polarization directions are mutually orthogonal. The PER of linearly polarized light in two directions reached 26.3 dB and 26.6 dB, respectively. We have verified that the fundamental frequency generates eigenmodes coherent synthesis by constructing a resonator model for theoretical simulations, thus realizing dual-wavelength synchronous modulation of polarization. This work provides an effective and reliable method for developing dual-wavelength passive Q-switched self-Raman lasers with controllable polarization.

_{我们通过实验证明了在c-cut Nd:YVO 4}被动调Q自拉曼激光器中基频光和一阶斯托克斯光的偏振态的操纵。无需任何偏振元件，包括两个偏振方向相互正交的特殊情况，即可实现1066 nm和1178 nm线偏振双波长激光器的稳定输出。两个方向的线偏振光的PER分别达到26.3 dB和26.6 dB。通过构建谐振腔模型进行理论仿真，验证了基频产生本征模相干合成，从而实现偏振的双波长同步调制。该工作为开发偏振可控的双波长无源调Q自拉曼激光器提供了一种有效可靠的方法。