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Wide-band semi-reflection/transmission film based on diluted Drude metal

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Abstract

We investigate the electromagnetic response of a composite structure consisting of two diluted Drude metal layers with sub-wavelength spacing at microwave frequencies. Simulations show that our structure can be considered as two equivalent thin films with different permittivity layered together so as to effectively tune the transmission T(ω) and reflection R(ω) in a frequency band. We demonstrate a wide band between 5.98 GHz to 8.15 GHz where T(ω) and R(ω) are tuned within 50% ± 2%. Parametric explorations show that the working band can be further shifted by geometric scaling. Our structure has potential to construct a metamaterial-based beam splitter which can be applied in a microwave or even terahertz system.

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Authors and Affiliations

  1. State Key Laboratory of Optical Technologies for Microfabrication, Institute of Optics and Electronics, Chinese Academy of Sciences, P.O. Box 350, Chengdu, 610209, China

    C. Hu, Z. Zhao, X. Chen, Q. Feng & X. G. Luo

Authors
  1. C. Hu
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  2. Z. Zhao
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  3. X. Chen
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  4. Q. Feng
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  5. X. G. Luo
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Correspondence to X. G. Luo.

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Hu, C., Zhao, Z., Chen, X. et al. Wide-band semi-reflection/transmission film based on diluted Drude metal. Appl. Phys. B 99, 503–506 (2010). https://doi.org/10.1007/s00340-009-3850-z

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  • DOI: https://doi.org/10.1007/s00340-009-3850-z

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