用多光束干涉模拟晶格图案

The Creation of Braviais Lattices by Multiple Laser Beams

利用多束激光干涉，可形成三维晶格结构。计算结果指出，用四束光或六束光可形成大部分的布拉格（Bragg）点阵。同时用He－Ne激光器获得了体心正方和面心立方的相干图案，晶格常数和计算结果相符。该研究对构成可见和红外区域的光子晶体有一定意义。

We present a computer simulation and an experimental demonstration of the formation of Bravais lattices by multiple laser beams. It is shown that most of the Bravais lattices can be created by four or six laser beams. The body centered, the hexagonal close-packed, and the face centered structures have been specially demonstrated by using a He-Ne laser. The measured lattice constants are coincident well with the calculated values. This study will be helpful to the realization of photonic crystul in visible and infrared region.