Quantitative force mapping of an optical vortex trap

Yiqiong Zhao; Graham Milne; J. Scott Edgar; Gavin D.M. Jeffries; David McGloin; Daniel T. Chiu

doi:10.1063/1.2912031

Quantitative force mapping of an optical vortex trap

Yiqiong Zhao, Graham Milne, J. Scott Edgar, Gavin D.M. Jeffries, David McGloin, Daniel T. Chiu

Physics

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24 Citations (Scopus)

Abstract

This paper describes the quantitative force mapping of micron-sized particles held in an optical vortex trap. We present a simple and efficient model, which accounts for the diffraction of the strongly localized optical field of the tightly focused laser beam, the spherical aberration introduced by the dielectric glass-to-water interface, employs the multidipole approximation for force calculations, and is able to reproduce, with quantitative agreement, the experimentally measured force map.

Original language	English
Article number	161111
Journal	Applied Physics Letters
Volume	92
Issue number	16
DOIs	https://doi.org/10.1063/1.2912031
Publication status	Published - 2008

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10.1063/1.2912031

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abstract = "This paper describes the quantitative force mapping of micron-sized particles held in an optical vortex trap. We present a simple and efficient model, which accounts for the diffraction of the strongly localized optical field of the tightly focused laser beam, the spherical aberration introduced by the dielectric glass-to-water interface, employs the multidipole approximation for force calculations, and is able to reproduce, with quantitative agreement, the experimentally measured force map.",

author = "Yiqiong Zhao and Graham Milne and Edgar, {J. Scott} and Jeffries, {Gavin D.M.} and David McGloin and Chiu, {Daniel T.}",

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AU - Milne, Graham

AU - Edgar, J. Scott

AU - Jeffries, Gavin D.M.

AU - McGloin, David

AU - Chiu, Daniel T.

N1 - Funding Information: The authors gratefully acknowledge NIH (EB005197) for support of this work.

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AB - This paper describes the quantitative force mapping of micron-sized particles held in an optical vortex trap. We present a simple and efficient model, which accounts for the diffraction of the strongly localized optical field of the tightly focused laser beam, the spherical aberration introduced by the dielectric glass-to-water interface, employs the multidipole approximation for force calculations, and is able to reproduce, with quantitative agreement, the experimentally measured force map.

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Quantitative force mapping of an optical vortex trap

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