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Proceedings Paper

Phonon polaritons in metamaterial photonic crystals at terahertz frequency range
Author(s): M. S. Vasconcelos; E. L. Albuquerque; U. L. Fulco; C. A. A. Araújo
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Paper Abstract

In this work we address the phonon-polariton band gap study in periodic and quasi-periodic (Fibonacci-type) multilayers made up of both positive (SiO2) and negative refractive index materials (metamaterials) following the Fibonacci sequence in the terahertz region. The behavior of the polaritonic band gaps as a function of the multilayer period is investigated. Our theoretical model makes use of a transfer matrix approach to simplify the algebra involved and to set up analytical phonon-polariton dispersion relations (bulk and surface modes). We also present a quantitative analysis of the results, pointing out the distribution of the allowed polaritonic bandwidths for high Fibonacci generations. An analysis of the connement eects arising from the competition between the long-range aperiodic order, induced by the quasi-periodic structure, and the short-range disorder, are made, yielding a good insight about they localization and power law of the polaritonic modes.

Paper Details

Date Published: 1 May 2012
PDF: 6 pages
Proc. SPIE 8423, Metamaterials VII, 84232H (1 May 2012); doi: 10.1117/12.923092
Show Author Affiliations
M. S. Vasconcelos, Univ. Federal do Rio Grande do Norte (Brazil)
E. L. Albuquerque, Univ. Federal do Rio Grande do Norte (Brazil)
U. L. Fulco, Univ. Federal do Rio Grande do Norte (Brazil)
C. A. A. Araújo, Instituto Federal de Educação, Ciência e Tecnologia (Brazil)

Published in SPIE Proceedings Vol. 8423:
Metamaterials VII
Allan D. Boardman; Nigel P. Johnson; Richard W. Ziolkowski, Editor(s)

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