Band gap formation and multiple scattering in photonic quasicrystals with a Penrose-type lattice.
This Letter presents a study of the local density of states (LDOS) in photonic quasicrystals. We show that the LDOS of a Penrose-type quasicrystal exhibits small additional band gaps. Among the band gaps, some exhibit a behavior similar to that typical of photonic crystals, while others do not. The development of certain band gaps requires large-size quasicrystals. It is explained by the long-range interactions involved in their formation. Moreover, the frequencies where the band gaps occur are not necessarily explained using single scattering and should therefore involve multiple scattering.
Della Villa
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Institut Fresnel, CNRS 6133, Université Paul Cézanne Aix-Marseille III, Faculté des Sciences et Techniques, case 161, 13397 Marseille cedex 20, France.
Enoch
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Tayeb
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Pierro
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Galdi
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Capolino
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