若晶体是由某个晶面族A,B,C,…组成，其面间距为d，当射线以掠射角α投射到晶体时，晶面A上点阵的散射和晶面B、C等点阵的散射相互干涉，对于同一层的散射线，当散线与晶面间的夹角等于掠射角时，在这个方向上射线产生相长干涉，对于同一层的散射线，当散射线与晶面间的夹角等于掠射角时，在这个方向上射线产生相长干涉。而对于不同层的散射线，当光程差为波长的整数倍时，各个面的散射线相互加强，形成光强的极大，这即是晶体对射线的布拉格衍射。
测量和研究了晶体的双折射率和布喇格衍射。
Birefractive index and Bragg diffraction have been oboserved and measured in the crystals.
本文叙述了CO2激光的布喇格衍射型声光调制及放大装置。
Acousto-optic modulation of CO2 laser amplifier by using Bragg diffraction is described.
周期与入射波长同数量级的体积布喇格光栅的衍射效率，与入射线偏振光的偏振方向有关。
Diffraction efficiency of volume Bragg grating, whose period is in the same order as the incident wavelength, is related to the polarization direction of the incident linear polarized beam.
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