Quantitative force mapping of an optical vortex trap

TY - JOUR

T1 - Quantitative force mapping of an optical vortex trap

AU - Zhao, Yiqiong

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

N2 - 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.

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

U2 - 10.1063/1.2912031

DO - 10.1063/1.2912031

M3 - Article

C2 - 19479042

SN - 0003-6951

VL - 92

SP - -

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 16

M1 - 161111

ER -