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Reducing the diffraction artifacts while implementing a phase function on a spatial light modulator |
Applied Optics, Vol. 50, Issue 4, pp. 509-518 (2011)
http://dx.doi.org/10.1364/AO.50.000509
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Abstract
Spatial light modulators are often used to implement phase modulation. Since they are pixelated, the phase function is usually approximated by a regularly sampled piecewise constant function, and the periodicity of the pixel sampling generates annoying diffraction peaks. We theoretically investigate two pixelation techniques: the isophase method and a new nonperiodic method derived from the Voronoi tessellation technique. We show that, for a suitable choice of parameters, the diffraction peaks disappear and are replaced by a smoothly varying halo. We illustrate the potential of these two techniques for implementing a lens function and wavefront correction.
© 2011 Optical Society of America
OCIS Codes
(050.1940) Diffraction and gratings : Diffraction
(230.6120) Optical devices : Spatial light modulators
ToC Category:
Optical Devices
History
Original Manuscript: September 10, 2010
Revised Manuscript: November 23, 2010
Manuscript Accepted: December 5, 2010
Published: January 27, 2011
Citation
Céline Benoît-Pasanau, François Goudail, Pierre Chavel, Jean-Paul Cano, and Jérôme Ballet, "Reducing the diffraction artifacts while implementing a phase function on a spatial light modulator," Appl. Opt. 50, 509-518 (2011)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-50-4-509
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