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Proceedings Paper

Optical binding of micron-size spheres
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Paper Abstract

We focus on a numerical study using coupled dipoles to explore the interaction between two spheres of micron size. This interaction (sometimes called optical coupling or binding) is studied in counter-propagating Gaussian laser beams that do not interfere. We found that for a certain range of the refractive indices of the particle there exist several stable and unstable positions where the total forces acting on particles are zero. Moreover we observed an oscillations of the force acting between both objects coming from the interference of backscattered field.

Paper Details

Date Published: 26 August 2005
PDF: 8 pages
Proc. SPIE 5930, Optical Trapping and Optical Micromanipulation II, 593029 (26 August 2005); doi: 10.1117/12.615739
Show Author Affiliations
Vitezslav Karasek, Institute of Scientific Instruments (Czech Republic)
Pavel Zemanek, Institute of Scientific Instruments (Czech Republic)

Published in SPIE Proceedings Vol. 5930:
Optical Trapping and Optical Micromanipulation II
Kishan Dholakia; Gabriel C. Spalding, Editor(s)

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