Reducing the effect of pixel crosstalk in phase only spatial light modulators | Zendy

Martin Persson | Zendy; David Engström | Zendy; Mattias Goksör | Zendy

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Reducing the effect of pixel crosstalk in phase only spatial light modulators

Author(s) -

Martin Persson,

David Engström,

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.

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