Multi-cycle reconfigurable THz extraordinary optical transmission using chalcogenide metamaterials

作     者：Tun Cao Meng Lian Xieyu Chen Libang Mao Kuan Liu Jingyuan Jia Ying Su Haonan Ren Shoujun Zhang Yihan Xu Jiajia Chen Zhen Tian Dongming Guo Tun Cao;Meng Lian;Xieyu Chen;Libang Mao;Kuan Liu;Jingyuan Jia;Ying Su;Haonan Ren;Shoujun Zhang;Yihan Xu;Jiajia Chen;Zhen Tian;Dongming Guo

作者机构：School of Optoelectronic Engineering and Instrumentation ScienceDalian University of TechnologyDalian 116024China Center for Terahertz Waves and College of Precision Instrument and Optoelectronics EngineeringTianjin UniversityTianjin 300072China School of Mechanical EngineeringDalian University of TechnologyDalian 116024China 

出 版 物：《Opto-Electronic Science》 (光电科学（英文）)

年 卷 期：2022年第1卷第1期

页      面：26-36页

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] 

基　　金：National Key Research and Development Program of China, NKRDPC, (2020YFA0714504, 2019YFA0709100) Liaoning Revitalization Talents Program, (XLYC1807237) 

主　　题：metamaterials extraordinary optical transmission surface plasmon resonance reconfigurable phase change materials 

摘      要：Metamaterials composed of metallic antennae arrays are used as they possess extraordinary optical transmission(EOT)in the terahertz(THz)region,whereby a giant forward light propagation can be created using constructive interference of tunneling surface plasmonic ***,numerous applications of THz meta-devices demand an active manipula-tion of the THz beam in free *** some studies have been carried out to control the EOT for the THz region,few of these are based upon electrical modulation of the EOT phenomenon,and novel strategies are required for act-ively and dynamically reconfigurable EOT *** this work,we experimentally present that the EOT resonance can be coupled to optically reconfigurable chalcogenide metamaterials which offers a reversible all-optical control of the THz light.A modulation efficiency of 88%in transmission at 0.85 THz is experimentally observed using the EOT metama-terials,which is composed of a gold(Au)circular aperture array sitting on a non-volatile chalcogenide phase change ma-terial(Ge2Sb2Te5)*** comes up with a robust and ultrafast reconfigurable EOT over 20 times of switching,excited by a nanosecond pulsed *** measured data have a good agreement with finite-element-method numerical *** work promises THz modulators with significant on/off ratios and fast speeds.