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Proceedings Article

Optical trapping of dielectric ellipsoids

[+] Author Affiliations
Stephen H. Simpson, Simon Hanna

Univ. of Bristol (United Kingdom)

Proc. SPIE 7762, Optical Trapping and Optical Micromanipulation VII, 77621B (August 27, 2010); doi:10.1117/12.859832
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From Conference Volume 7762

  • Optical Trapping and Optical Micromanipulation VII
  • Kishan Dholakia; Gabriel C. Spalding
  • San Diego, California | August 01, 2010

abstract

Having three distinct radii, ellipsoidal particles can be rigidly bound in Gaussian traps. The elongated intensity profile of the beam exerts forces that both confine, and orient the particle whilst the polarization of the beam provides a further orientational constraint. Consequently, the longest axis of the ellipsoid tends to align itself with the beam axis and the next longest with the polarization direction. In this article we examine the optical force fields experienced by ellipsoidal particles in Gaussian beams. The relationship between the general properties of these traps, especially their stability and stiffness, with particle shape is investigated.

© (2010) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Stephen H. Simpson and Simon Hanna
"Optical trapping of dielectric ellipsoids", Proc. SPIE 7762, Optical Trapping and Optical Micromanipulation VII, 77621B (August 27, 2010); doi:10.1117/12.859832; http://dx.doi.org/10.1117/12.859832


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