非厄米光学系统中奇异点的传感应用  

Sensing Applications of Exceptional Points in Non-Hermitian Optical Systems

作　　者：张翔宇 康明 刘会刚 刘海涛[3,4] Zhang Xiangyu;Kang Ming;Liu Huigang;Liu Haitao(Department of Microelectronic Engineering,College of Electronic Information and Optical Engineering,Nankai University,Tianjin 300350,China;College of Physics and Materials Science,Tianjin Normal University,Tianjin 300387,China;Institute of Modern Optics,College of Electronic Information and Optical Engineering,Nankai University,Tianjin 300350,China;Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology,Tianjin 300350,China)

机构地区：[1]南开大学电子信息与光学工程学院微电子工程系,天津300350 [2]天津师范大学物理与材料科学学院,天津300387 [3]南开大学电子信息与光学工程学院,现代光学研究所,天津300350 [4]天津市光电传感器与传感网络技术重点实验室,天津300350

出　　处：《中国激光》2020年第3期1-11,共11页Chinese Journal of Lasers

基　　金：国家自然科学基金(61775105,11504270,11674244);高等学校学科创新引智计划(B16027);薄膜光电子技术教育部工程研究中心、新型光伏发电技术国际科技合作基地(2016D01025)。

摘　　要：奇异点是非厄米系统参数空间中至少两个本征值和相应本征态同时简并的点,奇异点附近的异常光学现象,尤其是本征频率分裂对极小微扰的敏感特性,在超灵敏光学传感中有重要应用。本文主要结合近几年国内外关于奇异点的研究,介绍了奇异点及其在光学传感方面的相关理论,分析了奇异点传感和狄拉克点传感的不同;并着重总结奇异点传感在纳米颗粒检测、温度传感、折射率传感、光学陀螺仪和石墨烯生物化学传感等方面的最新研究进展。Exceptional points are degeneracies where at least two eigenvalues and corresponding eigenstates coalesce simultaneously in the parameter space of non-Hermitian systems. The appealing optical phenomena that occur near exceptional points, especially the ultrasensitivity of frequency splitting to tiny perturbations, have important applications in ultrasensitive optical sensing. This review first introduces exceptional points and related theories in optical sensing. Subsequently, it analyzes the difference between exceptional-point sensing and diabolic-point sensing. Finally, having jointed latest researches at home and abroad, a variety of sensing applications based on exceptional points, including nanoparticle detection, temperature sensing, refractive index sensing, optical gyroscope, and graphene biochemical or chemical sensing, are reviewed.

关 键 词：光学器件 奇异点 非厄米系统 光学传感 灵敏度增强 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置]