Characteristics of plasmonic waveguides and nonlinear metallic particles

Masuo Fukui; Toshihiro Okamoto; Toshiaki Ogawa; Masanobu Haraguchi; David F. P. Pile; Dmitri K. Gramotnev

doi:10.1117/12.679397

11 September 2006 Characteristics of plasmonic waveguides and nonlinear metallic particles

Masuo Fukui, Toshihiro Okamoto, Toshiaki Ogawa, Masanobu Haraguchi, David F. P. Pile, Dmitri K. Gramotnev

Proceedings Volume 6324, Plasmonics: Nanoimaging, Nanofabrication, and their Applications II; 632401 (2006) https://doi.org/10.1117/12.679397
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

Abstract

We have measured the propagation distances of wedge plasmons and two-dimensionally localized gap plasmons (GPW) at a vacuum wavelength of 632.8nm. The measured propagation distances of the wedge plasmons increased from 2.2μm to 3.1μm with increasing the wedge tip radius from 20nm to 125nm. The GPW has the measured propagation distance of 8.2μm for a gap width of 100nm and 900nm height. We have developed a finite-difference time-domain (FDTD) method represented by the spherical coordinates which is applicable for numerical calculations of nonlinear optical responses. This FDTD technique gives information about time-dependent spatial distributions of light intensity in nonlinear metallic particles and we can deeply understand nonlinear optical phenomena related with localized surface plasmons in a spherical particle.

Citation Download Citation

Masuo Fukui, Toshihiro Okamoto, Toshiaki Ogawa, Masanobu Haraguchi, David F. P. Pile, and Dmitri K. Gramotnev "Characteristics of plasmonic waveguides and nonlinear metallic particles", Proc. SPIE 6324, Plasmonics: Nanoimaging, Nanofabrication, and their Applications II, 632401 (11 September 2006); https://doi.org/10.1117/12.679397

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