title: Multiple excitation of localized surface plasmon to create a 10 nm x 10 nm strong optical spot using an Au nanoparticle array-based ridge waveguide.
abstract: We present a description of a multiple excitation of localized surface plasmons (LSPs) from an Au nanoparticle (NP) array-based ridge waveguide to create a small optical spot size with an extremely strong intensity. Using a numerical finite-difference time-domain method, we find that the optical intensity of the ridge waveguide with an Au NP array is about 700% higher than that of a simple ridge waveguide. Moreover, the spacing between the NPs plays an important role in the multiple excitation of LSPs. The spot size, calculated at FWHM, is 10 nm x 10 nm at a distance of 5 nm from the exit plane.
authors.affiliation: Center for Information Storage Device (CISD), Yonsei University, Seoul, Korea.
authors.forename: Sung-Mook
authors.initials: SM
authors.lastname: Kang
authors.forename: Jin
authors.initials: J
authors.lastname: Han
authors.forename: Taeseob
authors.initials: T
authors.lastname: Kim
authors.forename: No-Cheol
authors.initials: NC
authors.lastname: Park
authors.forename: Kyoung-Su
authors.initials: KS
authors.lastname: Park
authors.forename: Byung-Kwon
authors.initials: BK
authors.lastname: Min
authors.forename: Young-Pil
authors.initials: YP
authors.lastname: Park
mesh_terms: D006046:Gold / Q000737:chemistry* / Q000528:radiation effects; D008027:Light; D008029:Lighting / Q000379:methods*; D053758:Nanoparticles / Q000737:chemistry* / Q000528:radiation effects; D049329:Nanostructures / Q000737:chemistry* / Q000528:radiation effects; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000379:methods*
chemical_list: D006046:Gold