7 October 2005 Simulation, registration, and reconstruction of digital holograms of arbitrary objects by means of liquid crystal on silicon spatial light modulator
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Abstract
Each hologram: optical, digital and computer generated represents the phase and amplitude of an object. Therefore the process of object reconstruction may rely on one of two alternative procedures: optoelectronic direct reconstruction of hologram, which is represented by diffractive structure intensity, and recombining of object phase and amplitude as calculated from wavefront propagation process (here the method is based on singular wave component that is derived from a rigorous Sommerfeld's solution) or numerical reconstruction of digital hologram. In the paper we present the comparison of these two ways of optoelectronic reconstruction. The pros and cons for application of these procedures from image quality point of view are given. The experimental systems based on a Twyman-Green interferometer with two phase and amplitude LCOS or on a single digital hologram or computer generated hologram reconstruction setup are presented. The conclusions of these experiments will be utilized for optimizing of the process of production of security holograms with use of LCOS modulators.
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Aneta Michalkiewicz, Malgorzata Kujawinska, Ruslan Lymarenko, Oksana Budnyk, Xingua Wang, Philip J. Bos, "Simulation, registration, and reconstruction of digital holograms of arbitrary objects by means of liquid crystal on silicon spatial light modulator", Proc. SPIE 5947, Liquid Crystals: Optics and Applications, 59470G (7 October 2005); doi: 10.1117/12.621834; https://doi.org/10.1117/12.621834
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KEYWORDS
Holograms

Digital holography

Liquid crystal on silicon

Optoelectronics

Computer generated holography

Wavefronts

3D image reconstruction

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