全息干涉光学格点一到三维空间维度的简捷变换

采用计算机模拟技术,研究了激光全息干涉光学格点从一维、二维到三维的简易空间变换.采用镜像添加光束技术,改变光束配置,可以较容易地实现干涉场光学格点从二维到三维的空间变换.进一步研究发现,若改变入射光束的偏振方向,干涉场可由三维结构变为一维层状结构,并且层状结构周期最小可达半个光波长.本文对全息光刻制作各种空间维度,尤其是光学波段禁带的光子晶体提供了简捷可行的实验技术思路.

Short-cut transformation from one-dimensional to three-dimensional interference pattern by holographic simulation

One short-cut transformation from one-dimensional (1D) to three-dimensional (3D) spatial optical lattices is simulated and studied. By adding mirror-symmetric beams for 3 original beams, the interference patterns from 2D to 3D can be obtained. Furthermore, by selecting appropriate polarization of the interference beams, the 3D structure can become 1D layered structure, and the period of the layers can reach the sub-wavelength. This result offers an alternative method to produce 1D and 3D photonic crystals, especially for the fabrication of optical band gap structures.