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Minimizing intensity fluctuations in dynamic holographic optical tweezers by restricted phase change

Journal article
Authors Martin Persson
David Engström
Anders Frank
Jan Backsten
Jörgen Bengtsson
Mattias Goksör
Published in Optics Express
Volume 18
Issue 11
Pages 11250-11263
ISSN 1094-4087
Publication year 2010
Published at Department of Physics (GU)
Pages 11250-11263
Language en
Links dx.doi.org/10.1364/OE.18.011250
Keywords computer-generated holograms, spatial light modulators, liquid-crystal-display, force measurements, calibration, algorithm, compensation, written, arrays, image
Subject categories Electrical Engineering, Electronic Engineering, Information Engineering

Abstract

We present a method for reducing intensity fluctuations that typically occur when a spatial light modulator is updated between consecutive computer generated holograms. The method is applicable to most iterative hologram generating algorithms and minimizes the average phase difference between consecutive holograms. Applications with high stability requirements, such as optical force measurement with holographic optical tweezers, should benefit from this improvement. (C) 2010 Optical Society of America

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