14 May 2010 Non-Bragg bandgaps, resonances, and Gaussian beam propagation in superlattices composed from negative index metamaterials
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Abstract
We analyze wave propagation, bandgap structure, resonances and Gaussian beam propagation in superlattices containing Negative Index Metamaterials. We focus to resonances within non-Bragg banndgaps emerging when average refractive index is zero. We analyze influence of absorption in NIMs on the resonances inside frequency regions predicted to belong to non-Bragg bandgaps of periodic and non-periodic structures. Further, we study resonances in finite, single defect and double defect structures where defects are introduced by structural parameter change. We compare different examples of spectral transmission resonances and field profiles under oblique incidence, for different polarizations and study influence of impendence matching and defect mode coupling. Finally, we consider examples of Gaussian beam propagation in these structures.
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M. Maksimovic, M. Maksimovic, } "Non-Bragg bandgaps, resonances, and Gaussian beam propagation in superlattices composed from negative index metamaterials", Proc. SPIE 7717, Optical Modelling and Design, 77170W (14 May 2010); doi: 10.1117/12.854429; https://doi.org/10.1117/12.854429
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