1.06μm、0.53μm全固态激光双波长复合输出技术研究

Study of all solid state laser dual-wavelength composite output technology operating at 1.06 μm and 0.53 μm

针对现阶段光电对抗单波长激光干扰的局限性,提出了干扰激光双波长复合输出方案,为军用光电对抗设备的通用化和小型化提供了有效思路。利用稳态和速率方程理论分别建立了连续和脉冲激光复合输出模型,通过数值仿真探究了倍频晶体长度和腔镜基频透射率对复合激光输出功率成分的影响。在连续输出状态下,存在最佳基频透射率使基频输出功率最高;对于两种输出状态,都存在最佳倍频晶体长度使倍频输出功率最高。通过实验验证了连续和脉冲输出状态下复合激光输出功率成分随腔镜基频透过率的变化关系,并进一步探究了重复频率对复合激光输出的影响。

For the limitation of single-wavelength laser interference in military electro-optical countermeasure, the composite output program of dual-wavelength laser was proposed, providing an efficient way for universalization of military electro-optical countermeasure equipment. With the theory of steady state and rate equation, the composite output model in both continuous and pulsed output conditions were established. The result of numerical simulation shows that there exists optimal KTP length in both continuous and pulsed conditions. While the best fundamental-wavelength（FW） transmissivity only exists in continuous condition. Through the experiment, the relationship between FW transmissivity and output ratio of composite laser was verified. The effect of repetition rate on output ratio is then explored in experiment.