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11 September 2006 Force trapping gradient using diffractive optical elements
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We discuss a new technique to generate force gradient in arrays of optical traps. The arrays can be configured in two or three dimensions by means of phase diffractive optical elements displayed on a spatial light modulator. The design of the diffractive optical elements is based on the approach of spherical wave propagation and superposition, which enables to individually control the strength of each optical trap. Computer simulation and experimental results are discussed for two and three dimensional arrays of traps. An example with silica micro-beads trapped with different forces in two different planes is presented to demonstrate the validity of our approach.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
R. Moradi, E. Ferrari, V. Garbin, E. Di Fabrizio, and D. Cojoc "Force trapping gradient using diffractive optical elements", Proc. SPIE 6326, Optical Trapping and Optical Micromanipulation III, 63262V (11 September 2006);

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