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15 October 2012 A dynamic beam splitter using polymer dispersed liquid crystal materials
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We build a dynamic beam splitter with a holographic optical element (HOE). The laser light goes through the HOE and a fraction of intensity diffracted and transmitted could be tuned by an electric signal. We use holographic polymer dispersed liquid crystals materials. It is made by holographic recording in which the liquid crystal molecules diffuse to dark zones in the diffraction grating and they can be oriented by means of an electric field. The orientation of the liquid crystal produces a refraction index variation which changes the diffraction efficiency and therefore the grating has a dynamic behavior.
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Marina Riquelme, Manuel Ortuño, Andrés Márquez, Sergi Gallego, Inmaculada Pascual, and Augusto Beléndez "A dynamic beam splitter using polymer dispersed liquid crystal materials", Proc. SPIE 8498, Optics and Photonics for Information Processing VI, 84980I (15 October 2012);

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