Experimental investigation of phase detection and compensation in coherent combining of fiber laser array
光纤激光器阵列相干合成中的位相探测与校正方法研究

Recently, the coherent combining of high power fiber laser array has become a hotspot of research internationally, 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.