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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.This work was supported by the “Ministerio de Economía y Competitividad” of Spain (projects FIS2011-29803-C02-01 and FIS2011-29803-C02-02) and by the “Generalitat Valenciana” of Spain (projects PROMETEO/2011/021 and ISIC/2012/013)

A dynamic beam splitter using polymer dispersed liquid crystal materials