Negative refraction in two-dimensional photonic crystals

M. Qiu, Sanshui Xiao, A. Berrier, S. Anand, I. Thylen, M. Mulot, M. Swillo, Z. Ruan, S. He

Research output: Contribution to journalJournal articleResearchpeer-review


We present some of our recent results for negative retraction in photonic crystals. The concept of negative refraction in photonic crystals is firstly introduced. Then, the propagation of electromagnetic waves in photonic crystals is systematically studied. By the layer Korringa-Kohn-Rostoker method, the coupling efficiency between external plane waves and the Bloch waves in photonic crystals is investigated. It is found that the coupling coefficient is highly angular dependent even for an interface between air with n=1 and a photonic crystal with effective index neff=−1. It is also shown that, for point imaging by a photonic crystal slab, owing to the negative refraction, the influence of the surface termination on the transmission and the imaging quality is significant. Finally, we present results experimentally demonstrating negative refraction in a two-dimensional photonic crystal at optical communication wavelengths.
Original languageEnglish
JournalApplied Physics A: Materials Science & Processing
Issue number6
Pages (from-to)1231-1236
Publication statusPublished - 2005
Externally publishedYes


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