Cai L, Feng C S, He M Z, Yang X L, Meng X, Dong G Y, Yu X
Opt Express. 2005 May 30;13(11):4325-30. doi: 10.1364/opex.13.004325.
In holographic fabrication of photonic crystals the shape and size of the dielectric columns or particles ("atoms") are determined by the isointensity surfaces of the interference field. Therefore their photonic band gap (PBG) properties are closely related to their fabrication design. As an example, we have investigated the PBGs of a kind of holographically formed two-dimensional (2-D) square lattice with pincushion columns rotated by 45 degrees , and shown that this structure has complete PBGs in a wide range of dielectric contrast comparable to or even larger than those of the same lattice with square columns reported before. The optical design for making this structure is also given. This work may demonstrate the unique feature and advantages of photonic crystals made by holographic method and provide a guideline for their design and experimental fabrication.
在光子晶体的全息制造中，介电柱或粒子（“原子”）的形状和尺寸由干涉场的等强度面决定。因此，它们的光子带隙（PBG）特性与制造设计密切相关。例如，我们研究了一种通过全息方法形成的二维（2-D）方形晶格的光子带隙，该晶格的枕形柱旋转了45度，并表明这种结构在很宽的介电对比度范围内具有完整的光子带隙，与之前报道的具有方形柱的相同晶格相比，甚至更大。还给出了制造这种结构的光学设计。这项工作可能展示了通过全息方法制造的光子晶体的独特特征和优势，并为其设计和实验制造提供了指导。
