Negative refraction in two-dimensional photonic crystals
2005 (English)In: Applied Physics A: Materials Science & Processing, ISSN 0947-8396, E-ISSN 1432-0630, Vol. 80, no 6, 1231-1236 p.Article in journal (Refereed) Published
We present some of our recent results for negative refraction 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 n(eff)=-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.
Place, publisher, year, edition, pages
2005. Vol. 80, no 6, 1231-1236 p.
band-gap, waves, reflectivity, propagation, index, light, lens
IdentifiersURN: urn:nbn:se:kth:diva-14608DOI: 10.1007/s00339-004-3179-8ISI: 000227696100013ScopusID: 2-s2.0-16244415593OAI: oai:DiVA.org:kth-14608DiVA: diva2:332649
QC 201005252010-08-052010-08-052013-11-19Bibliographically approved