title: Long-range propagation of plasmon polaritons in a thin metal film on a one-dimensional photonic crystal surface.
abstract: We present experimental results on ultralong-range surface plasmon polaritons, propagating in a thin metal film on a one-dimensional (1D) photonic crystal surface over a distance of several millimeters. This propagation length is about 2 orders of magnitude higher than the one in the ordinary Kretschmann configuration at the same optical frequency. We show that a long-range surface plasmon polaritons propagation may take place not only in a (quasi)symmetrical scheme, where a thin metal film is located between two media with (approximately) the same refraction index, but also in a scheme where the thin metal film is located between an appropriate 1D photonic crystal and an arbitrary (air, water, etc.) medium. The ultralong-range surface plasmon polaritons are potentially important for biosensors, plasmonics, and other applications.
authors.affiliation: Institute of Spectroscopy, Russian Academy of Sciences, Troitsk, Moscow Region, 142190, Russia. konopsky@isan.troitsk.ru
authors.forename: Valery N
authors.initials: VN
authors.lastname: Konopsky
authors.forename: Elena V
authors.initials: EV
authors.lastname: Alieva