Improvement of Pulsed Holographic Recording Characteristics of Polyvinyl Alcohol/Acrylamide Green-Sensitive Photopolymer

Abstract:

Coherent pre-illumination technique is proposed to improve the pulsed holographic recording characteristics of polyvinyl alcohol (PVA) /acrylamide green-sensitive photopolymer. By optimizing the pre-illumination parameters such as pre-illumination energy density and pre-illumination delay time, the photosensitivity and diffraction efficiency of photopolymer under pulsed holographic recording are improved effectively. For the coherent pre-illumination energy density of 2mJ/cm², total pre-illumination energy of 50mJ/cm², the diffraction efficiency of 85% can be obtained with holographic exposure of 35mJ/cm². For the coherent pre-illumination delay time of 20seconds, the diffraction efficiency of 60% is obtained with holographic exposure of 17.5mJ/cm². The photosensitivity is successfully improved about 8 times compared with other reported results, it has good application prospects in the measurements of high-speed transient processes.

• Periodical: Advanced Materials Research (Volume 1035)
• Pages: 492-496
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1035.492
• Online since: October 2014
• Authors: Gang Chen, Jian Hua Zhu*, Zhen Xiong Luo, Yu Zhao, Ze Ren Li
• Keywords: Diffraction Efficiency, Holographic Recording Material, Photopolymer, Photosensitivity, Pre-Illumination, Pulsed Holography

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