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      Optically implemented broadband blueshift switch in the terahertz regime

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      Author
      Shen, N. H.
      Massaouti, M.
      Gokkavas, M.
      Manceau J. M.
      Özbay, Ekmel
      Kafesaki, M.
      Koschny, T.
      Tzortzakis, S.
      Soukoulis, C. M.
      Date
      2011-01-18
      Source Title
      Physical Review Letters
      Print ISSN
      0031-9007
      Publisher
      American Physical Society
      Volume
      106
      Issue
      3
      Pages
      037403-1 - 037403-4
      Language
      English
      Type
      Article
      Item Usage Stats
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      136
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      Abstract
      We experimentally demonstrate, for the first time, an optically implemented blueshift tunable metamaterial in the terahertz (THz) regime. The design implies two potential resonance states, and the photoconductive semiconductor (silicon) settled in the critical region plays the role of intermediary for switching the resonator from mode 1 to mode 2. The observed tuning range of the fabricated device is as high as 26% (from 0.76 THz to 0.96 THz) through optical control to silicon. The realization of broadband blueshift tunable metamaterial offers opportunities for achieving switchable metamaterials with simultaneous redshift and blueshift tunability and cascade tunable devices. Our experimental approach is compatible with semiconductor technologies and can be used for other applications in the THz regime.
      Keywords
      Blue shift
      Critical region
      Experimental approaches
      Fabricated device
      Optical control
      Other applications
      Photoconductive semiconductors
      Red shift
      Resonance state
      Semiconductor technology
      Switchable
      Terahertz
      Tunabilities
      Tunable device
      Tunable metamaterials
      Tuning ranges
      Electronic equipment
      Metamaterials
      Semiconducting silicon compounds
      Semiconductor device manufacture
      Semiconducting silicon
      Permalink
      http://hdl.handle.net/11693/22049
      Published Version (Please cite this version)
      http://dx.doi.org/10.1103/PhysRevLett.106.037403
      Collections
      • Department of Physics 2299
      • Nanotechnology Research Center (NANOTAM) 1006
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