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Chiral exceptional point enhanced active tuning and non reciprocity in micro-resonators

作     者:Hwaseob Lee Lorry Chang Ali Kecebas Dun Mao Yahui Xiao Tiantian Li Andrea Alù Sahin K.Özdemir Tingyi Gu Hwaseob Lee;Lorry Chang;Ali Kecebas;Dun Mao;Yahui Xiao;Tiantian Li;Andrea Alù;Sahin K.Özdemir;Tingyi Gu

作者机构:Department of Electrical and Computer EngineeringUniversity of DelawareNewarkDelaware 19716USA Department of Engineering Science and MechanicsPennsylvania State UniversityUniversity ParkPA 16802USA Photonics InitiativeAdvanced Science Research CenterCity University of New YorkNew YorkNY 10031USA Physics ProgramGraduate CenterCity University of New YorkNew YorkNY 10016USA Department of Engineering Science and MechanicsPennsylvania State UniversityUniversity ParkPA 16802USA Department of Electrical and Computer EngineeringSaint Louis UniversitySaint LouisMO 63103USA 

出 版 物:《光:科学与应用(英文版)》 (Light:Science & Applications)

年 卷 期:2025年第14卷第2期

页      面:401-410页

核心收录:

学科分类:070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

基  金:Vannevar Bush Faculty Fellowship Simons Foundation, SF Defense Advanced Research Projects Agency, DARPA, (N660012114034, FA9550-18-1-0300) Defense Advanced Research Projects Agency, DARPA Air Force Office of Scientific Research, AFOSR, (FA9550-21-1-0202, FA9550-18-1-0235) Air Force Office of Scientific Research, AFOSR 

主  题:active point micro chiral enhanced exceptional reciprocity resonators tuning 

摘      要:Exceptional points(EPs)have been extensively explored in mechanical,acoustic,plasmonic,and photonic ***,little is known about the role of EPs in tailoring the dynamic tunability of optical devices.A specific type of EPs known as chiral EPs has recently attracted much attention for controlling the flow of light and for building sensors with better responsivity.A recently demonstrated route to chiral EPs via lithographically defined symmetric Mie scatterers on the rim of resonators has not only provided the much-needed mechanical stability for studying chiral EPs,but also helped reduce losses originating from nanofabrication imperfections,facilitating the in-situ study of chiral EPs and their contribution to the dynamics and tunability of ***,we use asymmetric Mie scatterers to break the rotational symmetry of a microresonator,to demonstrate deterministic thermal tuning across a chiral EP,and to demonstrate EP-mediated chiral optical nonlinear response and efficient electro-optic *** results indicate asymmetric electro-optic modulation with up to 17 dB contrast at GHz and CMOS-compatible voltage *** wafer-scale nano-manufacturing of chiral electro-optic modulators and the chiral EP-tailored tunning may facilitate new micro-resonator functionalities in quantum information processing,electromagnetic wave control,and optical interconnects.

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