Holographic storage characteristic of water-resistant photopolymer sensitive to two wavelengths

The high-density holographic recording character of a novel water-resistant photopolymer material sensitive to red light and blue light was studied. The diffraction efficiencies of the hologram are all no less than 75%, and the sensitivities are (45～65)mJ/cm2 when exposing to red light and blue light respectively. The photopolymer material consists of compound monomer, compound sensitizer, compound initiator, chain transfer agent and binder, etc. The material has properties of waterproof, simple post-treatment, high resolution and high-temperature stability, etc. The multiplexing holographic storage shows that the reconstruction images are clear and bright. And there is no crosstalk among reconstruction images. Therefore, the photopolymer is fit for high-density data holographic recording. And it also can be used to produce the wavelength-division multiplexer used in light communication and other optical elements.