Open AccessReducing the effect of pixel crosstalk in phase only spatial light modulators
Author(s) -
Michael Persson,
David Freeman Engstrom,
Mattias Goksör
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.022334
Subject(s) - pixel , optics , spatial light modulator , holography , crosstalk , diffraction , holographic display , light intensity , diffraction efficiency , spatial frequency , materials science , computer science , physics
A method for compensating for pixel crosstalk in liquid crystal based spatial light modulators is presented. By modifying a commonly used hologram generating algorithm to account for pixel crosstalk, the intensity errors in obtained diffraction spot intensities are significantly reduced. We also introduce a novel method for characterizing the pixel crosstalk in phase-only spatial light modulators, providing input for the hologram generating algorithm. The methods are experimentally evaluated and an improvement of the spot uniformity by more than 100% is demonstrated for an SLM with large pixel crosstalk.