Study on permanent holographic recording in trimethylol propane triacrylate-based photopolymer films with high diffraction efficiency

We investigate permanent hologram recording in a photosensitive material with high diffraction efficiency (DE) of ∼90%. We successfully recorded three-dimensional (3D) object information, gratings, and "hogel" images in this photopolymer film without postprocessing. In addition, we study multiplexed hologram storage in this material. Because of its high resolution, high DE, and lack of need for electric field and postprocessing, this photopolymer may be suitable for analog hologram, digital hologram, and big data permanent storage. Our study proposes a potential holographic recording material to apply in large size static 3D holographic displays, including analog hologram storage, digital hologram prints, holographic anticounterfeiting, and big data holographic disks.