Two-dimensionally localized modes of a nano-scale gap plasmon waveguide
Pile, David F.P., Ogawa, Takeshi, Gramotnev, Dmitri K., Matsuzaki, Y., Vernon, Kristy C., Yamaguchi, K., Okamoto, Toshihiro, Haraguchi, Masanobu, & Fukui, Masuo (2005) Two-dimensionally localized modes of a nano-scale gap plasmon waveguide. Applied Physics Letters, 87(26), p. 261114.
We report numerical analysis and experimental observation of two-dimensionally localized plasmonic modes guided by a nano-gap in a thin metal film. Dispersion, dissipation and field structure of these modes are analyzed using the finite-difference time-domain algorithm. The experimental observation is conducted by the end-fire excitation of the proposed gap plasmon waveguides and detection of the generated modes using their edge scattering and CCD camera imaging. Physical interpretation of the obtained results is presented and origins of the described modes are discussed.
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|Item Type:||Journal Article|
|Keywords:||plasmon, plasmonic, subwavelength, waveguide, gap plasmon, slot waveguide, nano, diffraction limit, optical|
|Subjects:||Australian and New Zealand Standard Research Classification > PHYSICAL SCIENCES (020000) > OPTICAL PHYSICS (020500)|
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Science and Technology|
|Copyright Owner:||Copyright 2005 American Institute of Physics|
|Copyright Statement:||Reproduced in accordance with the copyright policy of the publisher.|
|Deposited On:||19 Jul 2006|
|Last Modified:||29 Feb 2012 23:16|
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