Multiple excitation of localized surface plasmon to create a 10 nm × 10 nm strong optical spot using an Au nanoparticle array-based ridge waveguide

Sung Mook Kang, Jin Han, Taeseob Kim, No Cheol Park, Kyoung Su Park, Byung Kwon Min, Young Pil Park

Research output: Contribution to journalArticle

8 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)1576-1585
Number of pages10
JournalOptics Express
Issue number2
Publication statusPublished - 2010 Jan 18


All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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