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Proceedings Paper

On shotnoise and Brownian motion limits to the accuracy of particle positioning with optical tweezers
Author(s): Jian Wei Tay; Xue Jiang; Warwick P. Bowen
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Paper Abstract

This paper examines the fundamental resolution limit of particle positioning with optical tweezers due to the combined effects of Brownian motion and optical shotnoise. It is found that Brownian motion dominates at low signal frequencies, whilst shotnoise dominates at high frequencies, with the exact crossover frequency varying by many orders of magnitude depending on experimental parameters such as particle size and trapping beam power. These results are significant both for analysis of the bandwidth limits of particle monitoring with optical tweezers and for enhancements of optical tweezer systems based on non-classical states of light.

Paper Details

Date Published: 8 January 2008
PDF: 10 pages
Proc. SPIE 6801, Photonics: Design, Technology, and Packaging III, 68010Z (8 January 2008); doi: 10.1117/12.769285
Show Author Affiliations
Jian Wei Tay, Univ. of Otago (New Zealand)
Xue Jiang, Univ. of Otago (New Zealand)
Warwick P. Bowen, Univ. of Otago (New Zealand)

Published in SPIE Proceedings Vol. 6801:
Photonics: Design, Technology, and Packaging III
Wieslaw Z. Krolikowski; Costas M. Soukoulis; Ping Koy Lam; Timothy J. Davis; Shanhui Fan; Yuri S. Kivshar, Editor(s)

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