<title>Photopolymer for recording transmission and reflection volume phase holograms</title>

Abstract

Recently, a number of photopolymers for recording volume phase hologram have been proposed. We have developed the novel photopolymerizable materials for recording the transmission and reflection volume holograms. These hologram recording materials are composed of lower-refractive index binding polymers, higher-refractive index monomers, plasticizers, photoinitiators, and photosensitive dyes. In this paper, the experimental result for the holograms using these materials would be presented. These materials can record both transmission and reflection volume holograms with high sensitivity, high diffraction efficiency, high resolution, and high heat resistance. These holograms were self-developing and white light was sufficient for fixing. After recording holograms, no treating to fix such as heat processing or postexposure of UV were needed. The optical and thermal properties of obtained hologram are written as follow. The diffraction efficiencies were over 90 percent. Transmittance was about 90 percent. Sensitivities were less than 10 mJ/cm2 from UV light to Ar ion laser. And these holograms have the heat resistance over 100 degrees C. The mechanisms of refractive index modulation in photopolymerization of the materials are also discussed.© (2002) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.