A new photopolymerizable holographic recording material based on acrylamide and N-hydroxymethyl acrylamide

• 来源期刊: 中国物理（英文版）
• 关键词: photopolymer holographic storage sensitivity diffraction efficiency
• 年，卷（期）: 2005,（10）
• 页码范围: 2004-2008
• 页数: 5页
• 语种: 英文

摘要

A new polyvinylalcohol-based photopolymeric holographic recording material has been developed. The recording is obtained by the copolymerization of acrylamide and N-hydroxymethyl acrylamide. Diffraction efficiencies near 50% are obtained with energetic exposure of 80m J/cm2. N-hydroxymethyl acrylamide can improve the optical quality of the film. With the increase of the concentration of N-hydroxymethyl acrylamide, the flatness of the film increases, scattering reduces and the straight image is clearer with a small distortion. The postexposure effect on the grating is also studied.The diffraction efficiency of grating increases further during postexposure, gradient of monomer exists after exposure.