Theoretical and experimental investigation of strongly localized plasmons on triangular metal wedges for sub-wavelength waveguiding
Pile, David F. P., Ogawa, Takeshi, Gramotnev, Dmitri K., Okamoto, Takeshi, Haraguchi, Masanobu, Fukui, Masuo, & Matsuo, Shigeki (2005) Theoretical and experimental investigation of strongly localized plasmons on triangular metal wedges for sub-wavelength waveguiding. Applied Physics Letters, 87(6), 061106.
We report numerical analysis and experimental observation of strongly localized plasmons guided by a triangular metal wedge. Dispersion and dissipation of such wedge plasmons are analyzed using the finite-difference time-domain algorithm. Experimental observation is conducted by the end-fire excitation and near-field detection of the predicted plasmons on a 40 degree silver nano-wedge. Good agreement with the theoretically predicted propagation distances is demonstrated. Differences between the theoretical and experimental field distribution are explained by insufficient resolution of the near-field optical probe.
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|Item Type:||Journal Article|
|Subjects:||Australian and New Zealand Standard Research Classification > PHYSICAL SCIENCES (020000) > OPTICAL PHYSICS (020500)|
Australian and New Zealand Standard Research Classification > PHYSICAL SCIENCES (020000)
|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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