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从多光束干涉基本原理出发,对激光全息制作光子晶体的普遍规律和影响因素进行了研究。进一步通过Matlab软件进行数值仿真,以三角晶格为例系统研究了光束的不同偏振类型组合对光子晶体微结构的影响。利用三角晶格光束配置的对称性,在等光强条件下研究了三组共10种不同光束偏振组合对微结构的光强极大、极小值和对比度的影响,进一步总结了激光偏振改变时光子晶体微结构的变化规律,并得到了实现最佳对比度三角晶格微结构的偏振组合。
Based on the basic principle of multi-beam interference, the general laws and influential factors of laser holographic photonic crystals are studied. The numerical simulation is further carried out by using Matlab software. The triangular lattice is taken as an example to systematically study the influence of different polarization type combinations of light beams on the photonic crystal microstructure. Based on the symmetry of the triangular lattice beam configuration, the effect of the polarization combination of 10 different beams in three groups on the maximum, minimum and contrast of the light intensity of the microstructures was studied under the condition of the same light intensity. The laser polarization changes The variation of the microstructure of the time-photonic crystals was obtained and the polarization combination of the triangular microstructure with the best contrast was obtained.