双拓扑绝缘体介质界面的反射波极化调控特性  

Polarization regulation characteristics of reflected waves at the interface of double topological insulators

作　　者：翟治珠 王明军[1,2] 吴必园 Zhai Zhizhu;Wang Mingjun;Wu Biyuan(School of Automation and Information Engineering,Xi’an University of Technology,Xi’an,Shaanxi 710048,China;Shaanxi Civil-Military Integration Key Laboratory of Intelligence Collaborative Networks,Xi’an University of Technology,Xi’an,Shaanxi 710126,China)

机构地区：[1]西安理工大学自动化与信息工程学院,陕西西安710048 [2]陕西省智能协同网络军民共建重点实验室,陕西西安710126

出　　处：《光电工程》2021年第2期41-48,共8页Opto-Electronic Engineering

基　　金：基金资助项目(6142404180301);西安市高校人才服务企业工程项目(GXYD14.26)。

摘　　要：本文对两种三维强拓扑绝缘体分界面的反射极化现象进行了研究,得到了线偏振光完全转化的普适性充要条件。通过分析分界面的直接反射率、交叉反射率以及极化转化率,发现该模型利用现有的拓扑绝缘体材料就可以实现线极化波的完全转变,突破了需要新的较小介电常数的拓扑绝缘体材料才能完全转化的限制。该转化过程可以利用克尔旋转角进行验证,并给出了实现超强角稳定性的极化转化器件的设计思路。这为拓扑绝缘体在极化器件方面的应用提供了理论依据。The property of reflective polarization on the surface of two 3D strong topological insulators was studied,obtaining the generalized necessary conditions required for the complete polarization conversion of linearly polarized light.By analyzing the reflectivity,cross reflectivity,and polarization conversion ratios of the interface of two topological insulators,we found that the model can realize the complete polarization conversion by using the existing topological insulator material,breaking through the limitation that the complete conversion requires a new smalldielectric constant topological insulator material.The process can be verified by the Kerr rotation angle.Finally,we show the design method of polarization conversion devices to realize super strong angular stability.The polarization control capability of topological insulators can also be verified by Kerr effect.This work provides a theoretical basis for the application of topological insulators in polarized devices.

关 键 词：拓扑绝缘体 极化转变 极化控制 

分 类 号：O441.6[理学—电磁学]