Refection gratings stored in a nanoparticle-doped photopolymer

Nowadays, the study and optimization of volume holography reflection gratings stored in environmentally compatible photopolymers has a great interest since they can be used as holographic optical elements. One of the main advantages of reflection holograms is that they can be reconstructed using white light. This allows to develop holographic sensors. Unslanted reflection holograms have been stored in an acrylate-poly(vinyl alcohol) based photopolymer development in our research group. With the main objective of increasing the diffraction effciency of reflection holograms, a series of chemical modifcations have been introduced in the same acrylated-based photopolymer. Specifcally, this material has been doped with Platinum nanoparticles (Pt-NP), increasing the refractive index modulation in the recorded diffraction gratings.