Recent advances in coherent perfect absorber-lasers and their future applications

作     者：YANG Min-ye YE Zhi-lu ZHU Liang FARHAT Mohamed CHEN Pai-Yen YANG Min-ye;YE Zhi-lu;ZHU Liang;FARHAT Mohamed;CHEN Pai-Yen

作者机构：Department of Electrical and Computer EngineeringUniversity of Illinois at ChicagoChicagoIL 60607United States ComputerElectricaland Mathematical Science and Engineering DivisionKing Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Saudi Arabia 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2022年第29卷第10期

页      面：3203-3216页

核心收录：

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 

主　　题：parity-time symmetry coherent-perfect absorber-laser spectral singularities non-Hermitian physics 

摘      要：In recent years, peculiar physical phenomena enabled by non-Hermitian systems, especially the parity-time(PT)-symmetric systems, have drawn tremendous research interests. Particularly, special spectral degeneracies known as exceptional points(EPs) and coherent perfect absorber-laser(CPAL) points where zero and infinite large eigenvalues coexist are the most popular topics to be studied. To date, the discussions of EPs that serve as transition boundaries between broken PT-symmetry phase and exact PT-symmetry phase have been intensively presented. However, the theoretical analysis and experimental validations of CPAL points are inadequate. Different from EPs, CPAL points, as a special solution of broken PT-symmetry phase, may exhibit even further counterintuitive physical features, which may have significant implications to study non-Hermitian physics. Here, we review some recent advances of CPAL phenomena in different sub-disciplines of physics, including optics, electronics and electromagnetics, and ***, we also provide an envision of future directions and applications of CPAL systems.