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Understanding of Negative Refraction by Periodic Composites

Understanding of Negative Refraction by Periodic Composites. Impact A quantitative, unified theory based on a generalized phase matching condition and complex Bloch band structure is developed Funding Air Force Office of Scientific Research Publications

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Understanding of Negative Refraction by Periodic Composites

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  1. Understanding of Negative Refraction by Periodic Composites Impact A quantitative, unified theory based on a generalized phase matching condition and complex Bloch band structure is developed Funding Air Force Office of Scientific Research Publications X. Zhang et al , Physical Review Letters, 101, 267401 (2008) X. Zhang et al , Optics Express, 18, 1151 (2010) Contact Xuhuai Zhang zhangxh@umich.edu Objective To provide a universal explanation for observed negative refraction in two type of periodic composites: lossless dielectric photonic crystals and lossy metal dielectric negative index materials (NIMs) . Diagram of NIM negative refraction experiments Predicted index as a function of loss (FOM) and Bloch wave vector

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