角锥腔脉冲固体激光器互注入锁相实验研究

Mutual Injection Phase Locking of Solid-State Lasers with Corner-Cube Cavity

相干合成技术是获得高功率、高亮度激光输出的有效途径之一。互注入锁相是获得相干合成的被动方式。理论分析与仿真模拟了角锥的相干特性,提出了基于角锥棱镜的脉冲固体激光束相干合成方案。开展了两路脉冲固体激光束相干合成和六路脉冲固体激光束相干合成的实验研究。得到了超过255mJ的合成激光输出,功率合成效率接近80%,可见度约为0.5。研究表明,该方法结构简单,是获得多路激光相干合成输出的有效方案。

Coherent combination of laser arrays is an effective way to achieve high-brightness laser beam. Mutual injection phase locking is a passive way of coherent combination. Theoretical analysis and simulation of the coherent properties of the corner cube are done. The scheme to coherently combine beams from pulsed solid state lasers with corner cube cavity is proposed. The experiments to coherently combine two and six beams from pulsed solid state lasers are performed. The output energy is more than 255 mJ with the power combination efficiency of approximately 80 % and visibility of about 0.5. The simple structure is efficient to achieve coherent combination of laser beams.