Photorefractive response and real-time holographic application of a poly(4-(diphenylamino)benzyl acrylate)-based composite

A photorefractive (PR) composite based on poly(4-(diphenylamino)benzyl acrylate) (PDAA) as a host photoconductive matrix is reported. The PR performance was investigated at three different wavelengths (532, 561, 594 nm), and an optimized operating wavelength of 532 nm was obtained. The PDAA composite had high sensitivity at 532 nm with a maximum diffraction efficiency of >80%, which was achieved at an applied electric field of 40 V μm−1. An application with a hologram display system using the PR composite was demonstrated. A clear and updatable hologram of an object was successfully reconstructed in real time, even at a low applied electric field of 25 V μm−1. Poly(4-(diphenylamino)benzyl acrylate) (PDAA) as a host photoconductive matrix was used for preparing photorefractive (PR) composite. PR responses were investigated at different wavelength of operating laser. PDAA composite has high sensitivity at 532 nm. A demonstration of dynamic hologram from a real object watched through the PR device was performed even at a low field of 25 V μm−1.

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