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Active Control of Electromagnetically Induced Transparency Analog in Terahertz MEMS Metamaterial
Author(s) -
Pitchappa Prakash,
Manjappa Manukumara,
Ho Chong Pei,
Singh Ranjan,
Singh Navab,
Lee Chengkuo
Publication year - 2016
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.201500676
Subject(s) - electromagnetically induced transparency , terahertz radiation , metamaterial , resonator , microelectromechanical systems , materials science , optoelectronics , split ring resonator , group delay and phase delay , modulation (music) , slow light , bandwidth (computing) , optics , physics , acoustics , telecommunications , computer science , photonic crystal
Independent control of near‐field‐coupled bright and dark resonators for active modulation and frequency tuning of electromagnetically induced transparency analogs in the terahertz spectral region is experimentally demonstrated. An out‐of‐plane reconfigurable microcantilever is the active element for resonator control. The proposed microelectromechanical systems (MEMS) metamaterial is miniaturized, electrically controlled, and can achieve up to an order of magnitude change in THz group‐delay bandwidth product.