›› 2010, Vol. 23 ›› Issue (3): 1-.

• 论文 •    下一篇

布拉格声光衍射场光强空间分布不均匀的研究

从波动方程出发,结合声光移频器的工作原理,根据声光晶体的有限尺寸,建立声场模型,推导出布拉格声光作用的耦合波方程。有限差分方法分析衍射场光强的空间三维分布。结果表明,声场振幅的不均匀分布会影响声光衍射场的光强分布。   

Study of Inhomogeneous Spatial Distribution of Scattering Light Intensity

Derived from the wave equation and the principle of acoustooptic frequency shifter,coupledwave equations of Bragg acoustooptic interaction are obtained,on the basis of a model of the acoustic field which is built in view of the finite size of acoustooptic crystal.The spatial threedimensional distribution of scattering field is analyzed with finite difference method.It is shown that the diffractive light intensity will be influenced by the inhomogeneous distribution of acoustic amplitude.   

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