Ferrari, Enrico, Cojoc, Dan, Emiliani, Valentina , Garbin, Valeria, Coppey-Moisan, Maite and Di Fabrizio, Enzo (2004) Three-dimensional holographic optical tweezers implemented on spatial light modulator. In: Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies II, 24-26 November 2004, Bucharest (Romania).
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| Item Type: | Conference or Workshop contribution (Paper) |
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| Item Status: | Live Archive |
Abstract
We have developed a holographic optical tweezers system based on diffractive optical elements (DOES) implementedon a liquid crystal spatial light modulator (LC-SLM) able to generate fine positioned traps on the sample. Our ownalgorithms and code allows to calculate phase DOES that can transform a single laser beam into an array of independenttraps, each with individually specified characteristics, arranged in arbitrary three-dimensional (3D) geometricalconfigurations. Different DOEs can be dynamically projected to the SLM in order to achieve a rearrangement of theconfiguration of the trapping spots. Silica or latex micro-beads are trapped in different configurations of spots todemonstrate the fine control capability on each trap. Our setup is built on a standard video microscope coupled with alaser source, a spatial light modulator and a three axis nano-positioning system. It allows to obtain 3D multi-trappingand a fine calibration for the positioning of the traps.
| Additional Information: | Advanced Topics in Optoelectronics, Microelectronics and Nanotechnologies II, 24-26 November 2004, Bucharest (Romania), Invited Paper |
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| Keywords: | Holographic optical tweezers |
| Subjects: | F Physical Sciences > F310 Applied Physics |
| Divisions: | College of Science > School of Life Sciences |
| ID Code: | 8399 |
| Deposited On: | 27 Mar 2013 10:38 |
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