Nonreciprocal magnetic photonic crystals
Abstract
We study band dispersion relations ω(k>) of a photonic crystal with at least one of the constitutive components being a magnetically ordered material. It is shown that by proper spatial arrangement of magnetic and dielectric components one can construct a magnetic photonic crystal with strong spectral asymmetry (nonreciprocity) ω(k>)≠ω(k>). The spectral asymmetry, in turn, results in a number of interesting phenomena, in particular, oneway transparency when the magnetic photonic crystal, being perfectly transparent for a Bloch wave of frequency Ω, ``freezes'' the radiation of the same frequency Ω propagating in the opposite direction. The frozen radiation corresponds to a Bloch wave with zero group velocity ∂ω(k)/∂k=0 and, in addition, with ∂^{2}ω(k)/∂k^{2}=0.
 Publication:

Physical Review E
 Pub Date:
 June 2001
 DOI:
 10.1103/PhysRevE.63.066609
 Bibcode:
 2001PhRvE..63f6609F
 Keywords:

 42.70.Qs;
 41.20.q;
 84.40.x;
 Photonic bandgap materials;
 Applied classical electromagnetism;
 Radiowave and microwave technology