6 November 2003 Improvement of Fresnel type diffractive optical elements on spatial light modulators limited by a reduced phase range
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Abstract
We propose the implementation of improved Fresnel type diffractive optical elements (DOEs) on spatial light modulators with a limited phase modulation capability. For the design of our elements we developed a method of design, that starts with an element formed by the phase function of a pixelated lens (PL), modulated by the phase of a lenslet array. The design is subject to a large number of phase levels in a limited range (smaller than 2π). We show that the undesirable effects produced by the complex modulation of a spatial light modulator (specifically, a twisted nematic liquid crystal display) can be minimized when improved Fresnel type DOEs are used. Simulation and optical reconstructions corroborate our proposal.
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Luis A. Gonzalez, Victor Arrizon, "Improvement of Fresnel type diffractive optical elements on spatial light modulators limited by a reduced phase range", Proc. SPIE 5174, Novel Optical Systems Design and Optimization VI, (6 November 2003); doi: 10.1117/12.504948; https://doi.org/10.1117/12.504948
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