多束激光相干合成的数值模拟

Numerical Simulation of Coherent Combination of Multi-Beam Laser

利用相干合成理论建立了多束激光相干合成的数学模型,并在此基础上进一步研究合成激光器的光束数目对相干合成效果的影响。结果表明:理想条件下,N束激光相干合成后,合成的振幅是单光束振幅的N倍,光强是单光束光强的N2倍,且随着参与合成数目的增加,合成的主峰更窄,能量更集中。

The mathematical model of multi-beam laser coherent combination is established on the basis of coherent theory, and the effect of laser quantity on the coherent result is analyzed based on the mathematical model. The results show that under the ideal condition, the total amplitude and light intensity of N beams co- herent combining are N times and N2 times higher than that of the single one respectively, and the resultant main peak is narrower and more energy concentrative with the increasing quantity of laser beam.