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1999•Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIEOpen access

Dynamic computer-generated hologram displayed on a spatial light modulator for information processing

Pierre Ambs, Laurent Bigué, Christophe Stolz

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Abstract

Many implementations of computer generated holograms (CGH’s) or diffractive optical elements (DOE’s) onto spatial light modulators (SLM’s) have already been considered. In this paper, we first review the various types of SLM’s available for DOE’s and the implementations of DOE’s onto SLM’s already reported in the literature. Then we investigate the point in displaying DOE’s onto SLM’s that couple phase and amplitude modulations, such as twisted nematic-liquid crystal displays (TN-LCD's): we provide computer simulations as well as experimental results.

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What this paper is about

Many implementations of computer generated holograms (CGH’s) or diffractive optical elements (DOE’s) onto spatial light modulators (SLM’s) have already been considered. In this paper, we first review the various types of SLM’s available for DOE’s and the implementations of DOE’s onto SLM’s already reported in the literature. Then we investigate the point in displaying DOE’s onto SLM’s that couple phase and amplitude modulations, such as twisted nematic-liquid crystal displays (TN-LCD's): we provide computer simulations as well as experimental results.

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Available abstract

Many implementations of computer generated holograms (CGH’s) or diffractive optical elements (DOE’s) onto spatial light modulators (SLM’s) have already been considered. In this paper, we first review the various types of SLM’s available for DOE’s and the implementations of DOE’s onto SLM’s already reported in the literature. Then we investigate the point in displaying DOE’s onto SLM’s that couple phase and amplitude modulations, such as twisted nematic-liquid crystal displays (TN-LCD's): we provide computer simulations as well as experimental results.

Key concepts: Spatial light modulator, Holography, Liquid-crystal display, Computer science, Computer-generated holography, Liquid crystal on silicon, Liquid crystal, Optics

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