光纤激光器阵列相干合成中的位相探测与校正方法研究

Experimental investigation of phase detection and compensation in coherent combining of fiber laser array

介绍一高速的位相检测与控制方法,可以对高功率光纤激光器阵列中每一路信号光波的位相进行实时探测与控制,从而使整个系统达到锁相输出的目的.以一路信号光为例,给出该方法的实验研究结果,从中可以看出,闭环控制的结果,可以将该信号光的位相稳定在一设定的静态工作点上.

Recently, the coherent combining of high power fiber laser array has become a hotspot of research intemationally, and the phase control electronics contributed greatly to the success of the coherent combining. A high-speed wavefront sensor is introduced to sample the wavefront and actively control the phase state of each individual optical fiber in a high average power fiber laser array, and accordingly the phase-locked output of the whole system is achieved. A single signal lightwave is taken as example in the paper, the research results are presented. We conclude from the research results that when closing the phase control feedback loop the phasefront .can be locked to the quiescent state of phase.