title: Reducing the effect of pixel crosstalk in phase only spatial light modulators.
abstract: 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.
authors.affiliation: University of Gothenburg, SE-41296 Göteborg, Sweden.
authors.forename: Martin
authors.initials: M
authors.lastname: Persson
authors.forename: David
authors.initials: D
authors.lastname: Engström
authors.forename: Mattias
authors.initials: M
authors.lastname: Goksör
mesh_terms: D000465:Algorithms; D016477:Artifacts; D006696:Holography / Q000295:instrumentation* / Q000379:methods*; D007089:Image Enhancement / Q000379:methods*; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D020349:Surface Plasmon Resonance / Q000295:instrumentation* / Q000379:methods*