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深入研究了随机激光等效腔的局域化特性,引入了外部光反馈下激光器的理论分析速率方程,设计了磁旋光晶体的光隔离器件实现随机激光器的改进.采用的Nd:YAG激光器的实验结果验证了改进激光器可以降低散射损耗,实现紫外激光的方向性输出.FDTD仿真结果进一步表明波导的TE模的光增益近似是平面波导的两倍;信号和泵浦强度的耦合在改进波导结构有了明显改进;输出功率结果证实了结构降低随机激光器的散射损耗.研究结果对于随机激光的应用具有明显的参考价值.“,”An in-depth study of the localization properties of a random laser cavity is equivalent to the introduction of the theoretical analysis rate equation under external optical feedback lasers designed for magnetic optical crystal isolation devices to achieve improved random lasers. Using Nd:YAG laser, experimental results demonstrate that improved laser scattering loss can be reduced to achieve directional UV laser output. Finite-difference time-domain simulation results further show that the TE mode waveguide optical gain is approximately twice the planar waveguide, the coupled signal and pump intensity in improving the guide structure is significantly improved, and the output power results confirm the structure to reduce random laser scattering losses. Results of the application of random laser have an obvious reference value.