High efficiency panchromatic photopolymer recording material for holographic data storage systems

摘要

Studies carried out to gauge the potential of a metal-ion doped panchromatic photopolymer recording material for application in real-time holographic data storage is presented. The photopolymer films are spin coated on glass plates to ensure better surface uniformity. Volume holographic transmission gratings with peak diffraction efficiency of 80% could be stored in the photopolymer films of 100 mu m thickness. An efficiency of 70% is achievable even for gratings recorded with exposure energy as low as 10 mJ/cm(2). A checkerboard pattern data page recorded in the photopolymer film using a defocused 4-f recording geometry could be reconstructed with good image quality. The experimental results illustrate the competency of the developed photopolymer for holographic data storage applications. (C) 2016 Published by Elsevier B.V.