title: Optical rectification effect due to surface plasmon polaritons at normal incidence in a nondiffraction regime.
abstract: We carried out an experimental and numerical investigation of photoinduced voltage at normal incidence in the nondiffraction regime, which was not predicted to occur by the simple momentum conservation model. We prepared two samples: one having space inversion symmetry and the other without this feature. At normal incidence in the nondiffraction regime, we observed a finite signal only for the asymmetric structure. We found that surface plasmon polaritons (SPPs) are excited by the signal and are attributed to the origin of the voltage. We also evaluated the radiation force of light by using the Maxwell stress tensor and found that pressure of light and not shear force is mainly induced in the structure due to the asymmetric excitation of SPPs.
authors: Department of Physics, Tohoku University, 980-8578 Sendai, Japan.
authors: Hiroyuki
authors: H
authors: Kurosawa
authors: Teruya
authors: T
authors: Ishihara
authors: Naoki
authors: N
authors: Ikeda
authors: Daiju
authors: D
authors: Tsuya
authors: Masayuki
authors: M
authors: Ochiai
authors: Yoshimasa
authors: Y
authors: Sugimoto