Numerical investigation of the flat band Bloch modes in a 2D photonic crystal with Dirac cones
Artikel i vetenskaplig tidskrift, 2015

A numerical method combining complex-k band calculations and absorbing boundary conditions for Bloch waves is presented. We use this method to study photonic crystals with Dirac cones. We demonstrate that the photonic crystal behaves as a zero-index medium when excited at normal incidence, but that the zero-index behavior is lost at oblique incidence due to excitation of modes on the flat band. We also investigate the formation of monomodal and multimodal cavity resonances inside the photonic crystals, and the physical origins of their different line-shape features.

Författare

P. Zhang

Iowa State University

C. Fietz

Iowa State University

Philippe Tassin

Chalmers, Teknisk fysik, Kondenserade materiens teori

T. Koschny

Iowa State University

C. M. Soukoulis

Iowa State University

Foundation for Research and Technology Hellas (FORTH)

Optics Express

1094-4087 (ISSN)

Vol. 23 10444-10452

Ämneskategorier

Atom- och molekylfysik och optik

DOI

10.1364/oe.23.010444