Share Email Print
cover

Proceedings Paper

Three-dimensional holographic optical tweezers implemented on spatial light modulator
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

We have developed a holographic optical tweezers system based on diffractive optical elements (DOES) implemented on a liquid crystal spatial light modulator (LC-SLM) able to generate fine positioned traps on the sample. Our own algorithms and code allows to calculate phase DOES that can transform a single laser beam into an array of independent traps, each with individually specified characteristics, arranged in arbitrary three-dimensional (3D) geometrical configurations. Different DOEs can be dynamically projected to the SLM in order to achieve a rearrangement of the configuration of the trapping spots. Silica or latex micro-beads are trapped in different configurations of spots to demonstrate the fine control capability on each trap. Our setup is built on a standard video microscope coupled with a laser source, a spatial light modulator and a three axis nano-positioning system. It allows to obtain 3D multi-trapping and a fine calibration for the positioning of the traps.

Paper Details

Date Published: 14 December 2005
PDF: 6 pages
Proc. SPIE 5972, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies II, 597203 (14 December 2005); doi: 10.1117/12.639172
Show Author Affiliations
Enrico Ferrari, TASC-INFM Nanolithography Beamline at Elettra Synchrotron Light Source (Italy)
Univ. of Trieste (Italy)
Dan Cojoc, Univ. of Trieste (Italy)
Politehnica Univ. of Bucharest (Romania)
Valentina Emiliani, Institut Jacques Monod, CNRS, Univ. Paris 6 et 7 (France)
Valeria Garbin, LILIT, TASC-INFM Nanolithography Beamline at Elettra Synchrotron Light Source (Italy)
Univ. of Trieste (Italy)
Maïté Coppey-Moisan, Institut Jacques Monod, CNRS, Univ. Paris 6 et 7 (France)
Enzo Di Fabrizio, LILIT, TASC-INFM Nanolithography Beamline at Elettra Synchrotron Light Source (Italy)


Published in SPIE Proceedings Vol. 5972:
Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies II
Ovidiu Iancu; Adrian Manea; Paul Schiopu; Dan Cojoc, Editor(s)

© SPIE. Terms of Use
Back to Top