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Velocity distribution of gold nanoparticles trapped on an optical waveguide

Velocity distribution of gold nanoparticles trapped on an optical waveguide
Velocity distribution of gold nanoparticles trapped on an optical waveguide
The velocity distributions of 250nm diameter gold nanospheres trapped in the evanescent fields of optical waveguides are studied. The automated analysis of a large number of particles and temporal frames is described. It is used to show that the envelope of the particles' speed follows the mode intensity profile of the evanescent field along a length of the waveguide and across its width. Modal beating in a dual-moded waveguide is mapped by analysis of nanoparticle distributions above the waveguide. A modal power of ~150mW at lambda=1066nm in a Cs+ ion-exchanged monomode waveguide results in speeds of up to 500µm/s.
image processing, image analysis, integrated optics, integrated optics devices, lasers and laser optics, trapping, optical devices, waveguides
1094-4087
3896-3901
Hole, John Patrick
554b72ed-9c8b-4987-95a7-26493fd37679
Wilkinson, James S
73483cf3-d9f2-4688-9b09-1c84257884ca
Grujic, Katarina
c9936e03-f933-4a9a-99b4-d8a10175b1c3
Hellesø, Olav Gaute
7c341b6b-c11d-475d-aedd-558f02210e53
Hole, John Patrick
554b72ed-9c8b-4987-95a7-26493fd37679
Wilkinson, James S
73483cf3-d9f2-4688-9b09-1c84257884ca
Grujic, Katarina
c9936e03-f933-4a9a-99b4-d8a10175b1c3
Hellesø, Olav Gaute
7c341b6b-c11d-475d-aedd-558f02210e53

Hole, John Patrick, Wilkinson, James S, Grujic, Katarina and Hellesø, Olav Gaute (2005) Velocity distribution of gold nanoparticles trapped on an optical waveguide. Optics Express, 13 (10), 3896-3901. (doi:10.1364/OPEX.13.003896).

Record type: Article

Abstract

The velocity distributions of 250nm diameter gold nanospheres trapped in the evanescent fields of optical waveguides are studied. The automated analysis of a large number of particles and temporal frames is described. It is used to show that the envelope of the particles' speed follows the mode intensity profile of the evanescent field along a length of the waveguide and across its width. Modal beating in a dual-moded waveguide is mapped by analysis of nanoparticle distributions above the waveguide. A modal power of ~150mW at lambda=1066nm in a Cs+ ion-exchanged monomode waveguide results in speeds of up to 500µm/s.

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Published date: May 2005
Keywords: image processing, image analysis, integrated optics, integrated optics devices, lasers and laser optics, trapping, optical devices, waveguides

Identifiers

Local EPrints ID: 21015
URI: https://eprints.soton.ac.uk/id/eprint/21015
ISSN: 1094-4087
PURE UUID: 5f7a9d6f-e929-4aa3-b9b6-aa2576ad1e3e
ORCID for James S Wilkinson: ORCID iD orcid.org/0000-0003-4712-1697

Catalogue record

Date deposited: 07 Mar 2006
Last modified: 19 Nov 2019 02:04

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