title: Efficient image projection by Fourier electroholography.
abstract: An improved efficient projection of color images is presented. It uses a phase spatial light modulator with three iteratively optimized Fourier holograms displayed simultaneously--each for one primary color. This spatial division instead of time division provides stable images. A pixelated structure of the modulator and fluctuations of liquid crystal molecules cause a zeroth-order peak, eliminated by additional wavelength-dependent phase factors shifting it before the image plane, where it is blocked with a matched filter. Speckles are suppressed by time integration of variable speckle patterns generated by additional randomizations of an initial phase and minor changes of the signal.
authors.affiliation: Faculty of Physics, Warsaw University of Technology, Koszykowa 75, 00 662 Warsaw, Poland. michal.makowski@if.pw.edu.pl
authors.forename: Michał
authors.initials: M
authors.lastname: Makowski
authors.forename: Izabela
authors.initials: I
authors.lastname: Ducin
authors.forename: Karol
authors.initials: K
authors.lastname: Kakarenko
authors.forename: Andrzej
authors.initials: A
authors.lastname: Kolodziejczyk
authors.forename: Agnieszka
authors.initials: A
authors.lastname: Siemion
authors.forename: Andrzej
authors.initials: A
authors.lastname: Siemion
authors.forename: Jaroslaw
authors.initials: J
authors.lastname: Suszek
authors.forename: Maciej
authors.initials: M
authors.lastname: Sypek
authors.forename: Dariusz
authors.initials: D
authors.lastname: Wojnowski