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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

Non-harmonic potential of a single beam optical trap

A.C. Richardson, S.N.S. Reihani, and L.B. Oddershede  »View Author Affiliations


Optics Express, Vol. 16, Issue 20, pp. 15709-15717 (2008)
http://dx.doi.org/10.1364/OE.16.015709


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Abstract

Since the invention of optical traps based on a single laser beam, the potential experienced by a trapped specimen has been assumed harmonic, in the central part of the trap. It has remained unknown to what extent the harmonic region persists and what occurs beyond. By employing a new method, we have forced the trapped object to extreme positions, significantly further than previously achieved in a single laser beam, and thus experimentally explore an extended trapping potential. The potential stiffens considerably as the bead moves to extreme positions and therein is not well described by simple Uhlenbeck theories.

© 2008 Optical Society of America

OCIS Codes
(140.7010) Lasers and laser optics : Laser trapping
(170.4520) Medical optics and biotechnology : Optical confinement and manipulation
(350.4855) Other areas of optics : Optical tweezers or optical manipulation

ToC Category:
Optical Trapping and Manipulation

History
Original Manuscript: August 1, 2008
Revised Manuscript: September 12, 2008
Manuscript Accepted: September 15, 2008
Published: September 19, 2008

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

Citation
A. C. Richardson, S. N. S. Reihani, and L. B. Oddershede, "Non-harmonic potential of a single beam optical trap," Opt. Express 16, 15709-15717 (2008)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=oe-16-20-15709


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