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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 3, Iss. 11 — Oct. 22, 2008

Strong tangential force within a small trapping volume under near-field Laguerre-Gaussian beam illumination

Baohua Jia, Xiaosong Gan, and Min Gu  »View Author Affiliations


Optics Express, Vol. 16, Issue 19, pp. 15191-15197 (2008)
http://dx.doi.org/10.1364/OE.16.015191


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Abstract

Near-field rotation of a trapped particle under focused evanescent Laguerre-Gaussian beam illumination is theoretically investigated by mapping the two-dimensional transverse trapping efficiency exerting on the particle. It is revealed that the severe focal field deformation associated with a focused evanescent Laguerre-Gaussian beam causes a significant impact on the transverse trapping performance of the microparticle. Compared with the far-field trapping force, strong tangential force components have been observed in the transverse efficiency mapping, which potentially lead to rotational motions to the particle within a small trapping volume in the optical near-field.

© 2008 Optical Society of America

OCIS Codes
(110.0180) Imaging systems : Microscopy
(140.7010) Lasers and laser optics : Laser trapping
(260.1960) Physical optics : Diffraction theory

ToC Category:
Optical Trapping and Manipulation

History
Original Manuscript: August 6, 2008
Revised Manuscript: September 8, 2008
Manuscript Accepted: September 9, 2008
Published: September 11, 2008

Virtual Issues
Vol. 3, Iss. 11 Virtual Journal for Biomedical Optics

Citation
Baohua Jia, Xiaosong Gan, and Min Gu, "Strong tangential force within a small trapping volume under near-field Laguerre-Gaussian beam illumination," Opt. Express 16, 15191-15197 (2008)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=oe-16-19-15191


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