Adiabatic and non-adiabatic nano-focusing of plasmons by tapered gap plasmon waveguides
Adiabatic and non-adiabatic nano-focusing of plasmons in tapered gap plasmon waveguides is analyzed using the finite-difference time-domain algorithm. Optimal adaptors between two different sub-wavelength waveguides and conditions for maximal local field enhancement are determined, investigated and explained on the basis of dissipative and reflective losses in the taper. Nano-focusing of plasmons into a gap of ~ 1 nm width with more than 20 times increase in the magnetic field intensity is demonstrated in a silver-vacuum taper of ~ 1 micron long. Comparison with the approximate theory based on the geometrical optics approximation is conducted.
Impact and interest:
Citation counts are sourced monthly from and citation databases.
These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.
Citations counts from theindexing service can be viewed at the linked Google Scholar™ search.
Full-text downloads displays the total number of times this work’s files (e.g., a PDF) have been downloaded from QUT ePrints as well as the number of downloads in the previous 365 days. The count includes downloads for all files if a work has more than one.
|Item Type:||Journal Article|
|Keywords:||nanofocusing, plasmon, plasmonic, subwavelength, gap plasmon, tapered, waveguide|
|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 2006 American Institute of Physics|
|Copyright Statement:||Reproduced in accordance with the copyright policy of the publisher.|
|Deposited On:||16 Oct 2006 00:00|
|Last Modified:||29 Feb 2012 13:28|
Repository Staff Only: item control page