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Minimization of diffraction peaks of spatial light modulators using Voronoi diagrams

Céline Benoit-Pasanau 1 François Goudail 1, * Pierre Chavel 1 Jean-Paul Cano 2 Jérôme Ballet 2
* Corresponding author
1 Laboratoire Charles Fabry de l'Institut d'Optique / Scop
LCFIO - Laboratoire Charles Fabry de l'Institut d'Optique
Abstract : It is possible to reduce the diffraction peaks of a Spatial Light Modulator (SLM) by breaking the periodicity of the pixels shape. We propose a theoretical investigation of a SLM that would be based on a Voronoi diagram, obtained by deforming a regular grid, and show that for a specific deformation parameter the diffraction peaks disappear and are replaced with a speckle-like diffraction halo. We also develop a simple model to determine the shape and the level of this halo.
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Céline Benoit-Pasanau, François Goudail, Pierre Chavel, Jean-Paul Cano, Jérôme Ballet. Minimization of diffraction peaks of spatial light modulators using Voronoi diagrams. Optics Express, Optical Society of America, 2010, 18 (14), pp.15223. ⟨10.1364/OE.18.015223⟩. ⟨hal-00555817⟩

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