激光合成技术旨在将几个分立的激光光束合成为一个同轴光束, 实现数倍于单个激光器功率的激光输出。设计了一种新型的空心光束变换器, 可将N路(N≥3)激光合成为一个同轴光束, 并进行了数值计算和实验研究。将此技术应用于三光束合成, 获得了激光合成效率89%, 时间同步精度误差不大于2 ns, 激光合成脉宽约10 ns, 激光光束发散角不大于2 mrad的实验结果。

Laser synthesis aims at synthesising a number of discrete laser beams into a coaxial beam to achieve higher output power which is several times of that of a single laser to achieve the higher output power. A novel hollow beam convertor is designed, which can be used in N (N≥3) way coaxial laser beam synthesis, and the numerical calculation and experimental study are done. Using this technology in the three-beam synthesis, laser synthesis efficiency is 89%, the time jitter is no more than 2 ns, laser pulse-width reaches about 10 ns (FWHM), and laser beam divergence angle is no more than 2 mrad.