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Active control of electromagnetically induced transparency analogue in terahertz metamaterials

Author

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  • Jianqiang Gu

    (Center for Terahertz waves and College of Precision Instrument and Optoelectronics Engineering, Tianjin University, and the Key Laboratory of Optoelectronics Information and Technology (Ministry of Education))

  • Ranjan Singh

    (Center for Integrated Nanotechnologies, Los Alamos National Laboratory)

  • Xiaojun Liu

    (Center for Terahertz waves and College of Precision Instrument and Optoelectronics Engineering, Tianjin University, and the Key Laboratory of Optoelectronics Information and Technology (Ministry of Education))

  • Xueqian Zhang

    (Center for Terahertz waves and College of Precision Instrument and Optoelectronics Engineering, Tianjin University, and the Key Laboratory of Optoelectronics Information and Technology (Ministry of Education))

  • Yingfang Ma

    (Center for Terahertz waves and College of Precision Instrument and Optoelectronics Engineering, Tianjin University, and the Key Laboratory of Optoelectronics Information and Technology (Ministry of Education))

  • Shuang Zhang

    (School of Physics and Astronomy, University of Birmingham)

  • Stefan A. Maier

    (Imperial College London)

  • Zhen Tian

    (Center for Terahertz waves and College of Precision Instrument and Optoelectronics Engineering, Tianjin University, and the Key Laboratory of Optoelectronics Information and Technology (Ministry of Education))

  • Abul K. Azad

    (Center for Integrated Nanotechnologies, Los Alamos National Laboratory)

  • Hou-Tong Chen

    (Center for Integrated Nanotechnologies, Los Alamos National Laboratory)

  • Antoinette J. Taylor

    (Center for Integrated Nanotechnologies, Los Alamos National Laboratory)

  • Jiaguang Han

    (Center for Terahertz waves and College of Precision Instrument and Optoelectronics Engineering, Tianjin University, and the Key Laboratory of Optoelectronics Information and Technology (Ministry of Education))

  • Weili Zhang

    (Center for Terahertz waves and College of Precision Instrument and Optoelectronics Engineering, Tianjin University, and the Key Laboratory of Optoelectronics Information and Technology (Ministry of Education)
    School of Electrical and Computer Engineering, Oklahoma State University)

Abstract

Recently reported metamaterial analogues of electromagnetically induced transparency enable a unique route to endow classical optical structures with aspects of quantum optical systems. This method opens up many fascinating prospects on novel optical components, such as slow light units, highly sensitive sensors and nonlinear devices. In particular, optical control of electromagnetically induced transparency in metamaterials promises essential application opportunities in optical networks and terahertz communications. Here we present active optical control of metamaterial-induced transparency through active tuning of the dark mode. By integrating photoconductive silicon into the metamaterial unit cell, a giant switching of the transparency window occurs under excitation of ultrafast optical pulses, allowing for an optically tunable group delay of the terahertz light. This work opens up the possibility for designing novel chip-scale ultrafast devices that would find utility in optical buffering and terahertz active filtering.

Suggested Citation

  • Jianqiang Gu & Ranjan Singh & Xiaojun Liu & Xueqian Zhang & Yingfang Ma & Shuang Zhang & Stefan A. Maier & Zhen Tian & Abul K. Azad & Hou-Tong Chen & Antoinette J. Taylor & Jiaguang Han & Weili Zhang, 2012. "Active control of electromagnetically induced transparency analogue in terahertz metamaterials," Nature Communications, Nature, vol. 3(1), pages 1-6, January.
    • Handle: RePEc:nat:natcom:v:3:y:2012:i:1:d:10.1038_ncomms2153
    DOI: 10.1038/ncomms2153
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