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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 14 — May. 10, 2009
  • pp: 2720–2730

High rotation speed of single molecular microcrystals in an optical trap with elliptically polarized light

Mariela Rodriguez-Otazo, Angel Augier-Calderin, Jean-Pierre Galaup, Jean-François Lamère, and Suzanne Fery-Forgues  »View Author Affiliations


Applied Optics, Vol. 48, Issue 14, pp. 2720-2730 (2009)
http://dx.doi.org/10.1364/AO.48.002720


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Abstract

We build an experiment of optical tweezers based on the use of an inverted optical microscope for manipulating microsized single crystals, which are made of an organic dye and parallelepiped in shape. The microcrystals are directed so that their long axis is in the axial direction of the trapping beam. Their short axis follows the direction of the linear polarization of the beam. In circular or elliptic polarization, the crystals are spontaneously put in rotation with a high speed of up to 500 turns per second. It is the first time, to the best of our knowledge, that such a result is reported for particles of the size of our crystals. Another surprising result is that the rotation speed was first increased as expected by increasing the incident power, but after passing by a maximum it decreased until the complete stop of rotation, whereas the power continued growing. This evolution was not reversible. Several hypotheses are discussed to explain such behavior.

© 2009 Optical Society of America

OCIS Codes
(120.4640) Instrumentation, measurement, and metrology : Optical instruments
(140.7010) Lasers and laser optics : Laser trapping
(350.4855) Other areas of optics : Optical tweezers or optical manipulation

ToC Category:
Optical Trapping and Tweezing

History
Original Manuscript: February 18, 2009
Revised Manuscript: April 10, 2009
Manuscript Accepted: April 14, 2009
Published: May 6, 2009

Virtual Issues
Vol. 4, Iss. 7 Virtual Journal for Biomedical Optics

Citation
Mariela Rodriguez-Otazo, Angel Augier-Calderin, Jean-Pierre Galaup, Jean-François Lamère, and Suzanne Fery-Forgues, "High rotation speed of single molecular microcrystals in an optical trap with elliptically polarized light," Appl. Opt. 48, 2720-2730 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-14-2720

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