多束相干光叠加的计算机模拟

Computer simulation for superposing of multiple coherent laser beams

研究了具有空间不对称分布的多束相干光的叠加问题。对参考平面上相干光产生的干涉光强分布进行理论推导和数值计算,从理论上定量地分析了多束相干光的波矢量、偏振态对干涉光强分布的影响。模拟结果表明波矢量的改变主要影响干涉光强的空间分布,激光束偏振态的改变主要影响干涉场的对比度。

The superposition of multiple coherent laser beams with asymmetrical spatial distribution is studied. The distribution of interference light intensity generated by multiple coherent laser beams on reference plane is derived in theory and the numerical calculation is carried out. The influence of wave vector of multiple coherent laser beams and polarization state on the distribution of interference light intensity is quantitatively analyzed in theory. The simulation results show that the change of wave vector mainly affects the spatial distribution of interference light intensity and the change of laser beam polarization state mainly affect contrast of interference field.