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Proceedings Paper

Optical trap shaping for binding force study and optimization
Author(s): Marc Guillon
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Paper Abstract

Light induced binding energy between particles in the Rayleigh range in laser fields varies as 1/r. This long range dependence suggests a diverging increase of the binding force when the number of interacting particles becomes large. Theoretical studies performed for 1D periodic chains of dipoles reveals large binding field enhancement for an optimum number of interacting particles. When the number of dipoles overshoots this number, the binding intensity collapses. This result is consistent with experimental observations of periodicity defects in large 2D optically built crystals. Some solutions are explored to keep large binding field enhancement for large crystals. Shrinking the coherence length and phase modulating the incident trapping light are among the proposed schemes.

Paper Details

Date Published: 6 February 2007
PDF: 10 pages
Proc. SPIE 6483, Complex Light and Optical Forces, 648302 (6 February 2007); doi: 10.1117/12.699864
Show Author Affiliations
Marc Guillon, Observatoire de Haute Provence (France)

Published in SPIE Proceedings Vol. 6483:
Complex Light and Optical Forces
David L. Andrews; Enrique J. Galvez; Gerard Nienhuis, Editor(s)

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