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

Research output: Contribution to journal › Article › peer-review

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. (c) 2008 American Institute of Physics.

Original language	English
Article number	161111
Pages (from-to)	-
Number of pages	3
Journal	Applied Physics Letters
Volume	92
Issue number	16
DOIs	https://doi.org/10.1063/1.2912031
Publication status	Published - 21 Apr 2008

Keywords

INDEX MICROPARTICLES
DIELECTRIC SPHERE
BEAMS
POLARIZATION
DIFFRACTION
PARTICLES
SYSTEMS
REGIME
FIELD

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10.1063/1.2912031

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AU - Milne, Graham

AU - Edgar, J. Scott

AU - Jeffries, Gavin D. M.

AU - McGloin, David

AU - Chiu, Daniel T.

PY - 2008/4/21

Y1 - 2008/4/21

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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. (c) 2008 American Institute of Physics.

KW - INDEX MICROPARTICLES

KW - DIELECTRIC SPHERE

KW - BEAMS

KW - POLARIZATION

KW - DIFFRACTION

KW - PARTICLES

KW - SYSTEMS

KW - REGIME

KW - FIELD

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JO - Applied Physics Letters

JF - Applied Physics Letters

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Quantitative force mapping of an optical vortex trap

Abstract

Keywords

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