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Proceedings Paper

Generation of subwavelength traps in the optical near field
Author(s): Romain Quidant; P. Ghenuche; Goncal Badenes
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Paper Abstract

We report the sub-wavelength patterning of the optical near-field by total internal reflection illumination of a regular array of resonant gold nano-particles. Under appropriate conditions, the in-plane coupling between localized surface plasmon fields gives rise to sub-wavelength light spots between the structures. Measurements performed with an Apertureless Scanning Near-Field Optical Microscope (ASNOM) show good agreement with theoretical predictions based on the Green dyadic method. This concept might offer a convenient way to elaborate extended optical trap landscapes for manipulation of sub-micrometer systems.

Paper Details

Date Published: 18 October 2004
PDF: 8 pages
Proc. SPIE 5514, Optical Trapping and Optical Micromanipulation, (18 October 2004); doi: 10.1117/12.555818
Show Author Affiliations
Romain Quidant, Institut de Ciencies Fotoniques (Spain)
P. Ghenuche, Institut de Ciencies Fotoniques (Spain)
Goncal Badenes, Institut de Ciencies Fotoniques (Spain)

Published in SPIE Proceedings Vol. 5514:
Optical Trapping and Optical Micromanipulation
Kishan Dholakia; Gabriel C. Spalding, Editor(s)

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