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多路光束的相干合成是获得高功率、高亮度激光输出的有效途径。实验采用一种新型的偏振锁相技术,实现了对偏振方向相互垂直的两路光束的相位锁定和相干合成。研究表明该偏振锁相装置可将两束光的相位差锁定于0～2π之间的任意值且在较大振幅比情况下仍可获得大于90%的合束效率,是一种可定标放大的相干合成技术。
Coherent multi-beam synthesis is to obtain high-power, high-brightness laser output an effective way. The experiment uses a new type of polarization phase-locked technology to realize phase locking and coherent synthesis of two beams perpendicular to each other in polarization direction. Studies have shown that the polarization phase-locked device can lock the phase difference of two beams to any value between 0 and 2π and can still achieve a combined efficiency of more than 90% at a large amplitude ratio, which is a scalable Enlarged coherent synthesis technology.