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Proceedings Paper

Near-field optical manipulation with cavity enhanced evanescent fields
Author(s): Peter J. Reece; Veneranda Garcés-Chávez; Kishan Dholakia
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Paper Abstract

In the following paper we show that near-field optical manipulation can be greatly increased through the use of cavity enhanced evanescent fields. This approach utilises a resonant dielectric structure and a prism coupler to produce Fabry- Perot like cavity modes at a dielectric-fluid interface, which can be utilised in optical manipulation. Using this structure we show a ten-times increase in the optical interaction of micrometer-sized colloids compared with the standard evanescent wave configuration. In addition, stable accumulation and ordering of large-scale arrays of colloids is demonstrated using two counter propagating cavity enhanced evanescent fields. We believe that this technique has considerable scope for promoting the role of near-field optical manipulation at the nanometer scale.

Paper Details

Date Published: 9 February 2006
PDF: 8 pages
Proc. SPIE 6131, Nanomanipulation with Light II, 61310M (9 February 2006); doi: 10.1117/12.660814
Show Author Affiliations
Peter J. Reece, Univ. of St. Andrews (United Kingdom)
Veneranda Garcés-Chávez, Univ. of St. Andrews (United Kingdom)
Kishan Dholakia, Univ. of St. Andrews (United Kingdom)

Published in SPIE Proceedings Vol. 6131:
Nanomanipulation with Light II
David L. Andrews, Editor(s)

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