The basic principles of formation of three-dimensional(3D) periodic microstructures by interference of four noncoplanar beams are explained in both the normal space and the reciprocal space.

• 分别在空域和倒格子空间介绍了非共面4光束干涉形成三维周期性微结构,即三维光子晶体的物理基础,证明了固体物理中的所有14种布拉维格均可用非共面4光束干涉来得到;