18 August 2005 Fast hologram computation and aberration control for holographic tweezers
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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.
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M. Reicherter, M. Reicherter, T. Haist, T. Haist, S. Zwick, S. Zwick, A. Burla, A. Burla, L. Seifert, L. Seifert, W. Osten, W. Osten, } "Fast hologram computation and aberration control for holographic tweezers", Proc. SPIE 5930, Optical Trapping and Optical Micromanipulation II, 59301Y (18 August 2005); doi: 10.1117/12.617040; https://doi.org/10.1117/12.617040
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