Intensity distribution of vortex beams from multilayered topological insulator slab

被引：0
|
作者：
Wang, Mingjun [1 ]
Lin, Niuniu [1 ]
Liu, Yanxiang [2 ]
Ren, Shenhe [3 ]
机构：
[1] Xian Univ Technol, Sch Automat & Informat Engn, Xian 710048, Shaanxi, Peoples R China
[2] CRRC Tangshan Co Ltd, Tangshan 064000, Hebei, Peoples R China
[3] Xianyang Normal Univ, Sch Phys & Elect Engn, Xianyang 712000, Shannxi, Peoples R China
来源：
AOPC 2019: ADVANCED LASER MATERIALS AND LASER TECHNOLOGY | 2019年 / 11333卷
基金：
中国国家自然科学基金;
关键词：
Topological insulator; Laguerre Gaussian beam; reflection and transmission; ORBITAL ANGULAR-MOMENTUM; PROPAGATION; LIGHT;
D O I：
10.1117/12.2542898
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Based on angular spectrum expansion and 4x4. matrix theory, our works have combined the traditional vortex optical theory with the latest Topological insulator(TI) to present the reflection and transmission characteristics of an Laguerre Gaussian(LG) beam from a multilayered topological insulator slab. The reflected and transmissed beam intensities from three-layered TI slab are numerically simulated. It is shown that the distortion of intensity distribution is greatly affected by the topological magneto-electric polarizability of TI. The method presented in this article not only colud be extended to different TI-layers but could reveal unusual photonic band structures and band gaps in TI photonic crystals in further research.
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页数：5
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