Phonon polaritons in metamaterial photonic crystals at terahertz frequency range

被引：0
|
作者：
Vasconcelos, M. S. [1 ]
Albuquerque, E. L. [2 ]
Fulco, U. L. [2 ]
Araujo, C. A. A. [3 ]
机构：
[1] Univ Fed Rio Grande do Norte, Escola Ciencia & Tecnol, BR-59072970 Natal, RN, Brazil
[2] Univ Fed Rio Grande do Norte, Dept Biofis, BR-59072970 Natal, RN, Brazil
[3] Ciencia Tecnol Maranhao, Inst Fed Educ, Dept Fisica, BR-65020300 Sao Lus, Maranhao, Brazil
来源：
METAMATERIALS VII | 2012年 / 8423卷
关键词：
NEGATIVE REFRACTION; INDEX;
D O I：
10.1117/12.923092
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We investigate the phonon-polariton band gaps 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 systematically. 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, which gives good insight about their localization and power laws. (C) 2009 Optical Society of America
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页数：6
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