Longer axial trap distance and larger radial trap stiffness using a double-ring radially polarized beam
Optics Letters, Vol. 35, Issue 8, pp. 1281-1283 (2010)
http://dx.doi.org/10.1364/OL.35.001281
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Abstract
The optical trapping forces acting on a metallic Rayleigh particle are calculated for the case where a double-ring-shaped radially polarized beam is applied. The influence of the off-focus distance and the off-axis distance of a trapping particle on the trapping force is investigated. Compared with the use of the conventional single-ring-shaped radially polarized beam, the longer axial trap distance and the larger radial trap stiffness are predicted using a double-ring-shaped radially polarized beam in an optical trap. These features are useful for improving the trapping ability of an optical trap system where a longer axial trap distance is needed.
© 2010 Optical Society of America
OCIS Codes
(140.7010) Lasers and laser optics : Laser trapping
(260.5430) Physical optics : Polarization
(290.5870) Scattering : Scattering, Rayleigh
ToC Category:
Lasers and Laser Optics
History
Original Manuscript: October 15, 2009
Revised Manuscript: March 1, 2010
Manuscript Accepted: March 13, 2010
Published: April 15, 2010
Virtual Issues
Vol. 5, Iss. 9 Virtual Journal for Biomedical Optics
Citation
Yaoju Zhang, Taikei Suyama, and Biaofeng Ding, "Longer axial trap distance and larger radial trap stiffness using a double-ring radially polarized beam," Opt. Lett. 35, 1281-1283 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-8-1281
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