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Proceedings Paper

Fast hologram computation and aberration control for holographic tweezers
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Paper Abstract

Holographic tweezers offer a very versatile tool in many trapping applications. Compared to tweezers working with acousto optical modulators or using the generalized phase contrast, holographic tweezers so far were relatively slow. The computation time for a hologram was much longer than the modulation frequency of the modulator. To overcome this drawback we present a method using modified algorithms which run on state of the art graphics boards and not on the CPU. This gives the potential for a fast manipulation of many traps, for cell sorting for example, as well as for a real-time aberration control. The control of aberrations which can vary spatially or temporally is relevant to many real world applications. This can be accomplished by applying an iterative approach based on image processing.

Paper Details

Date Published: 18 August 2005
PDF: 9 pages
Proc. SPIE 5930, Optical Trapping and Optical Micromanipulation II, 59301Y (18 August 2005); doi: 10.1117/12.617040
Show Author Affiliations
M. Reicherter, Univ. Stuttgart (Germany)
T. Haist, Univ. Stuttgart (Germany)
S. Zwick, Univ. Stuttgart (Germany)
A. Burla, Univ. Stuttgart (Germany)
L. Seifert, Univ. Stuttgart (Germany)
W. Osten, Univ. Stuttgart (Germany)

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

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