Abstract
A comprehensive analysis of the coupling coefficients between plane waves in conventional dielectric media and Bloch waves of photonic crystals with effective negative refractions is performed by the layer Korringa-Kohn-Rostoker method. Employing the infinite layers refraction operator, semi-infinite size photonic crystals are considered. Some special coupling properties are discussed. In particular, the strong angular dependence of coupling coefficients is found even for an interface between air (n=1) and a photonic crystal with effective refractive index (n(eff)=-1). Thus, a negative refractive index defined by the radius of a circular equal-frequency contour does not guarantee an isotropic behavior.
Original language | English |
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Article number | 045111 |
Journal | Physical Review B Condensed Matter |
Volume | 71 |
Issue number | 4 |
Number of pages | 7 |
ISSN | 0163-1829 |
DOIs | |
Publication status | Published - 2005 |
Externally published | Yes |