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Proceedings Paper

Holographic optical tweezers in the Fresnel regime
Author(s): Alexander Jesacher; Severin Furhapter; Stefan Bernet; Monika Ritsch-Marte
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Paper Abstract

We present a flexible setup for steering of laser tweezers using a high resolution spatial light modulator (SLM). Moving of e.g. trapped cells in the focal plane of the microscope objective is possible without the need for time consuming re-calculation of holograms. Numerous light spots or other modes like the so called "doughnut modes", which carry angular momentum, can be created and controlled independently by "mouse-dragging" the hologram window at the SLM display. In addition, undesired diffraction orders are suppressed using adequately calculated fresnel holograms.

Paper Details

Date Published: 18 October 2004
PDF: 6 pages
Proc. SPIE 5514, Optical Trapping and Optical Micromanipulation, (18 October 2004); doi: 10.1117/12.556779
Show Author Affiliations
Alexander Jesacher, Univ. Innsbruck (Austria)
Severin Furhapter, Univ. Innsbruck (Austria)
Stefan Bernet, Univ. Innsbruck (Austria)
Monika Ritsch-Marte, Univ. Innsbruck (Austria)


Published in SPIE Proceedings Vol. 5514:
Optical Trapping and Optical Micromanipulation
Kishan Dholakia; Gabriel C. Spalding, Editor(s)

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