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Polarization-induced stiffness asymmetry of optical tweezers |
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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