两路关联光纤激光器互注入锁相实验

Mutual Injection Phase-Locking of Two Inter-Related Fiber Lasers

基于角锥互注入锁相相干合成方案,利用光纤Bragg光栅(R=85%@1 064 nm)作为两路光纤激光器的共用腔镜,实现了两路光纤激光器相关联,进一步提高了激光的互注入能量。采用外腔结构,较容易实现了两路光纤激光器的能量互注入锁相。在实验上观察到了远场清晰稳定的干涉条纹(可见度超过0.8),获得了功率合成效率约为80%的线偏振相干激光输出。

Based on the mutual injection phase-locking combining technology by a cornercube, fiber bragg grating （R=85% @ 1 064 nm）, as a sharing mirror of two fiber lasers, is used to achieve two fiber lasers associated. And the mutual energy is further enhanced. With a extra-cavity structure, the mutual-injection phase-locking of two interrelated fiber lasers is easily obtained. In the experiment, steady interference stripes with high contrast ratio （more than 0.8） are observed and the linearly polarize coherent laser is obtained. The power combining efficiency is about 80 %.