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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 7, Iss. 11 — Oct. 31, 2012

Polarization-induced stiffness asymmetry of optical tweezers

Ebrahim Madadi, Akbar Samadi, Mojtaba Cheraghian, and S. Nader S. Reihani  »View Author Affiliations


Optics Letters, Vol. 37, Issue 17, pp. 3519-3521 (2012)
http://dx.doi.org/10.1364/OL.37.003519


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Abstract

A tightly focused, linearly polarized laser beam, so-called optical tweezers, is proven to be a useful micromanipulation tool. It is known that there is a stiffness asymmetry in the direction perpendicular to the optical axis inherited from the polarization state of the laser. In this Letter, we report our experimental results of stiffness asymmetry for different bead sizes measured at the optimal trapping condition. We also provide the results of our generalized Lorenz–Mie based calculations, which are in good agreement with our experimental results. We also compare our results with previous reports.

© 2012 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:
Lasers and Laser Optics

History
Original Manuscript: May 22, 2012
Revised Manuscript: July 10, 2012
Manuscript Accepted: July 10, 2012
Published: August 21, 2012

Virtual Issues
Vol. 7, Iss. 11 Virtual Journal for Biomedical Optics

Citation
Ebrahim Madadi, Akbar Samadi, Mojtaba Cheraghian, and S. Nader S. Reihani, "Polarization-induced stiffness asymmetry of optical tweezers," Opt. Lett. 37, 3519-3521 (2012)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ol-37-17-3519

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