Building optical matter with binding and trapping forces

Jean-Marc R. Fournier; Gerben Boer; Guy Delacretaz; Pierre M. Jacquot; Johann Rohner; Rene Paul Salathe

doi:10.1117/12.561047

18 October 2004 Building optical matter with binding and trapping forces

Jean-Marc R. Fournier, Gerben Boer, Guy Delacretaz, Pierre M. Jacquot, Johann Rohner, Rene Paul Salathe

Proceedings Volume 5514, Optical Trapping and Optical Micromanipulation; (2004) https://doi.org/10.1117/12.561047
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

Very high frequency oscillations of intense light fields interact with micron-size dielectric objects to exert dc optical forces that allow polarizable particles to levitate, to be trapped and to be bound. Such optical forces are also suitable to arrange cold atoms in optical lattices. Various assemblages of optical traps, including periodic arrays, can be constructed either with independent lasers, or with a single laser beam split into different parts later recombined by interference, as well as through the use of diffractive elements. These optical-well arrays serve as templates for writing and erasing dynamic two-dimensional and three-dimensional "optical crystals", composed of mono-dispersed polystyrene spheres in water. Subsequently, the crystals become diffractive structures themselves. The association of micro-fluidics and optical trapping allows for the formation of optical traps into micro-channels. This leads to perform microchemistry experiments, such as fluorescence detection, on individual bodies attached to trapped particles. Self-trapping due to the optical binding force relates to the interaction between different dielectric objects located in an electromagnetic field; each one reacts not only to the field of the incident beam, but also to the induced fields radiated coherently by all other particles. Optical binding strongly influences the equilibrium state and the behavior of optical crystals. It must have the potential for creating collective effects.

Citation Download Citation

Jean-Marc R. Fournier, Gerben Boer, Guy Delacretaz, Pierre M. Jacquot, Johann Rohner, and Rene Paul Salathe "Building optical matter with binding and trapping forces", Proc. SPIE 5514, Optical Trapping and Optical Micromanipulation, (18 October 2004); https://doi.org/10.1117/12.561047

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