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Analysis of wave propagation in a two-dimensional photonic crystal with negative index of refraction: plane wave decomposition of the Bloch modes

AuthorsMartínez, Alejandro; Míguez, Hernán ; Sánchez-Dehesa, José; Martí, Javier
Issue Date2005
PublisherOptical Society of America
CitationOptics Express, 13(11):4160-4174 (2005)
Abstractwork presents a comprehensive analysis of electromagnetic wave propagation inside a two-dimensional photonic crystal in a spectral region in which the crystal behaves as an effective medium to which a negative effective index of refraction can be associated. It is obtained that the main plane wave component of the Bloch mode that propagates inside the photonic crystal has its wave vector k⃗′ out of the first Brillouin zone and it is parallel to the Poynting vector (S⃗·k⃗′>0), so light propagation in these composites is different from that reported for left-handed materials despite the fact that negative refraction can take place at the interface between air and both kinds of composites. However, wave coupling at the interfaces is well explained using the reduced wave vector (k⃗) in the first Brillouin zone, which is opposed to the energy flow, and agrees well with previous works dealing with negative refraction in photonic crystals
Publisher version (URL)http://dx.doi.org/10.1364/OPEX.13.004160
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