One-way edge mode in a gyromagnetic photonic crystal slab
2012 (English)In: Optics Letters, ISSN 0146-9592, E-ISSN 1539-4794, Vol. 37, no 19, 4110-4112 p.Article in journal (Refereed) Published
We demonstrate that one-way electromagnetic modes could be sustained by the edge of a gyromagnetic photonic crystal slab of triangular lattice under an external dc magnetic field. The applied magnetic field breaks the time-reversal symmetry of the three-dimensional system, and thus the original degeneracy point in k space, at which two dispersion surfaces intersect, is lifted, resulting in a photonic band gap below the light cone. At this band gap, the one-way mode is localized horizontally to the slab edge, while confined by the index contrast in the vertical direction.
Place, publisher, year, edition, pages
2012. Vol. 37, no 19, 4110-4112 p.
Applied magnetic fields, DC magnetic field, Degeneracy point, Dispersion surface, Electromagnetic modes, Index contrasts, K space, Photonic crystal slab, Slab edges, Three dimensional systems, Time reversal symmetries, Triangular lattice, Vertical direction
Engineering and Technology
IdentifiersURN: urn:nbn:se:kth:diva-104701DOI: 10.1364/OL.37.004110ISI: 000309542900062ScopusID: 2-s2.0-84867155082OAI: oai:DiVA.org:kth-104701DiVA: diva2:567079
QC 201211122012-11-122012-11-092016-08-16Bibliographically approved