title: Field expulsion and reconfiguration in polaritonic photonic crystals.
abstract: We uncover a rich set of optical phenomena stemming from the incorporation of polar materials exhibiting transverse phonon polariton excitations into a photonic crystal structure. We identify in the frequency spectrum two regimes in which the dielectric response of the polaritonic medium can induce extreme localization of the electromagnetic energy. Our analysis of the effect of polarization and the interaction between the polariton and photonic band gaps on the Bloch states leads to a pair of mechanisms for sensitive frequency-controlled relocation and/or reconfiguration of the fields.
authors.affiliation: Center for Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. kch23@mit.edu
authors.forename: Kerwyn Casey
authors.initials: KC
authors.lastname: Huang
authors.forename: Peter
authors.initials: P
authors.lastname: Bienstman
authors.forename: John D
authors.initials: JD
authors.lastname: Joannopoulos
authors.forename: Keith A
authors.initials: KA
authors.lastname: Nelson
authors.forename: Shanhui
authors.initials: S
authors.lastname: Fan