title: Polaritons in hollow cylinders in the presence of a dc magnetic field.
abstract: We study the effects of a dc external magnetic field on the polaritons propagating in hollow dielectric cylinders, taking into account the retardation effects. In solving Maxwell's equations we show that only the TM modes can propagate in these systems, and we obtain the dispersion relation of the confined-surface-polariton modes. The effects of geometric parameters and the external magnetic field on the propagation of surface-polariton modes are also analyzed and show significant influence on the behavior of the modes. Numerical results are presented for the dispersion relation of surface polaritons with GaAs as the optically active medium.
authors.affiliation: Departamento de Fisica, Universidade Federal do Ceará, Campus do Pici, Centro de Ciências, Caixa Postal 6030, 60.455-760 Fortaleza, Ceará, Brazil. gil@fisica.ufc.br
authors.forename: Gil A
authors.initials: GA
authors.lastname: Farias
authors.forename: Eloneid F
authors.initials: EF
authors.lastname: Nobre
authors.forename: Ricardo
authors.initials: R
authors.lastname: Moretzsohn
authors.forename: Nilson S
authors.initials: NS
authors.lastname: Almeida
authors.forename: Michael G
authors.initials: MG
authors.lastname: Cottam