非对称光束干涉制备二维微纳光子结构研究  

Fabrication of two-dimensional micro-nano photonic structures by symmetry-lost beams interference

作　　者：吕浩[1,2] 尤凯 兰燕燕 高冬 赵秋玲 王霞[1,2] 

机构地区：[1]青岛科技大学数理学院,青岛266061 [2]山东省新型光电材料与技术工程实验室,青岛266061

出　　处：《物理学报》2017年第21期364-370,共7页Acta Physica Sinica

基　　金：山东省高等学校科技计划(批准号:J14LJ06);山东省自然科学基金(批准号:ZR2014FP012);国家自然科学基金(批准号:11274189;11504194)资助的课题~~

摘　　要：研究了基于不同偏振组合的非对称4束和5束光干涉制备二维微纳光子结构.通过改变光束的参数组合获得了枝节状、波形状等结构.在非对称光束干涉中,光束的构型和偏振改变了波矢差分布,从而改变晶格形貌和对比度.利用CHP-C感光胶开展了全息光刻实验制备,获得了与模拟一致的光子结构.该研究为制备新颖光子结构提供了有效途径,此类光子结构还可以为制备不同类型的金属点阵结构提供模板,对新型光子器件的制备和应用研究具有一定的促进作用.Micro-nano photonic structures, such as meta-materials and photonic crystals, having special effects on light generation, transmission, detection and sensing on a submicron scale, play an increasingly significant role in optical information fields. Micro-nano photonic structures have great potential applications in surface laser emission, optical waveguide and high-Q laser. There are several methods to fabricate micro-nano photonic structures, including laser direct writing,electron beam direct writing, electrochemical corrosion, and holographic lithography and so on. Holographic lithography employs multi-beam interference to generate periodic patterns and records them on photosensitive materials to form typical structures. What is more, it has advantages of low cost, large area and high efficiency. However, there are still some challenges in fabricating typical micro-nano photonic structures, especially the precise optical alignment, beam polarization and control of the details of local interference pattern. A specially designed prism is employed in this work and we propose a compact symmetry-lost setup with the rapid adjustment of beam configuration and polarization.Based on the theory of multi-beam interference, symmetry-lost four-and five-beam interference with different polarizations are simulated. By changing the combination of beam configuration and polarization, novel two-dimensional micro-nano photonic structures can be achieved. The variations of azimuthal angle and polarization of beam in symmetrylost system affect the wave vector difference, and thus changing the lattice shape and structure contrast. Branch-like and wave-like structures are generated by symmetry-lost four beams with polarizations of（90°, 90°, 90°, 90°） and five beams with polarizations of（90°, 90°, 90°, 90°, 0°）, respectively. An appropriate threshold is selected in simulation, such that the intensity data larger than the threshold are removed, while the smaller data are remained, which is transformed into an optical

关 键 词：多光束干涉 非对称 光子结构 偏振 

分 类 号：TN256[电子电信—物理电子学]