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Proceedings Paper

Assembling mesoscopic particles by various optical schemes
Author(s): Jean-Marc Fournier; Johann Rohner; Pierre Jacquot; Robert Johann; Solon Mias; René-P. Salathé
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Paper Abstract

Shaping optical fields is the key issue in the control of optical forces that pilot the manipulation of mesoscopic polarizable dielectric particles. The latter can be positioned according to endless configurations. The scope of this paper is to review and discuss several unusual designs which produce what we think are among some of the most interesting arrangements. The simplest schemes result from interference between two or several coherent light beams, leading to periodic as well as pseudo-periodic arrays of optical traps. Complex assemblages of traps can be created with holographic-type set-ups; this case is widely used by the trapping community. Clusters of traps can also be configured through interferometric-type set-ups or by generating external standing waves by diffractive elements. The particularly remarkable possibilities of the Talbot effect to generate three-dimensional optical lattices and several schemes of self-organization represent further very interesting means for trapping. They will also be described and discussed. in this paper. The mechanisms involved in those trapping schemes do not require the use of high numerical aperture optics; by avoiding the need for bulky microscope objectives, they allow for more physical space around the trapping area to perform experiments. Moreover, very large regular arrays of traps can be manufactured, opening numerous possibilities for new applications.

Paper Details

Date Published: 18 August 2005
PDF: 10 pages
Proc. SPIE 5930, Optical Trapping and Optical Micromanipulation II, 59300Y (18 August 2005); doi: 10.1117/12.617548
Show Author Affiliations
Jean-Marc Fournier, Swiss Federal Institute, EPFL (Switzerland)
Johann Rohner, Swiss Federal Institute, EPFL (Switzerland)
Pierre Jacquot, Swiss Federal Institute, EPFL (Switzerland)
Robert Johann, Swiss Federal Institute, EPFL (Switzerland)
Solon Mias, Lab. Charles Fabry, Institut d'Optique (France)
René-P. Salathé, Swiss Federal Institute, EPFL (Switzerland)

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

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