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6 February 2007 Optical trap shaping for binding force study and optimization
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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.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Marc Guillon "Optical trap shaping for binding force study and optimization", Proc. SPIE 6483, Complex Light and Optical Forces, 648302 (6 February 2007);


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