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Tuning the Propagation Constant by the Anticrossing Bandgap Prism Coupling Technique

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Abstract

A novel plasmonic structure based on an anticrossing bandgap prism coupling technique is proposed. The study has been carried out using photonic crystals based on diffraction gratings (bounded by dielectrics with identical dielectric functions) together with a high refractive index prism to couple the long-range surface plasmon polaritons to photons. We analyse the structure and demonstrate the ability for tuning the propagation constants of plasmon modes by changing the thickness of the gold grating. The comparison to non-bandgap techniques is studied, and the influence of the plasmonic configuration on the plasmon propagation constant is discussed as well. Experimental measurements were also carried out to confirm the validity of our model.

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Acknowledgments

Financial support by the Max Planck Gesellschaft and the Austrian Institute of Technology (GmbH) is acknowledged. The work was also supported by the EU and the Deutsche Forschungsgemainschaft under projects FP6-2005-FOOD-036300 and KN 224/18-1.

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Authors and Affiliations

  1. Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz, 55128, Germany

    Raquel Chuliá-Jordán

  2. Departamento de Química-Física I, Universidad Complutense de Madrid, Avda. Complutense s/n, Madrid, 28040, Spain

    Raquel Chuliá-Jordán & David Santamaría-Pérez

Authors
  1. Raquel Chuliá-Jordán
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  2. David Santamaría-Pérez
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Correspondence to Raquel Chuliá-Jordán.

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Chuliá-Jordán, R., Santamaría-Pérez, D. Tuning the Propagation Constant by the Anticrossing Bandgap Prism Coupling Technique. Plasmonics 7, 665–675 (2012). https://doi.org/10.1007/s11468-012-9357-1

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  • DOI: https://doi.org/10.1007/s11468-012-9357-1

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