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研究了在两种光电聚合物中加入N-乙烯基咔唑后,用氩离子激光器的514.5nm波长的光作全息记录的感光特性.两种材料为聚甲基丙烯酸甲酯(PMMA)和聚α-氰基丙烯酸乙酯(PECA),用苯醌(BQ)作敏化剂.结果表明,含有N-乙烯基咔唑(VCz)的光电聚合物对514.5nm的光吸收增加.由于VCz和BQ形成电荷转移络合物(CTC),使PMMA片提高了感光灵敏度.本文还探讨了PMMA型光电聚合物的光化学反应的机理。
The photosensitive properties of holographic recording using 514.5 nm wavelength of argon ion laser after the addition of N-vinylcarbazole to the two photopolymers were studied.The two materials were polymethylmethacrylate (PMMA) and poly Ethyl α-cyanoacrylate (PECA) and benzoquinone (BQ) were used as sensitizers.The results showed that the light absorption of 514.5nm increased with the photoconductive polymer containing N-vinylcarbazole (VCz) BQ forms a charge-transfer complex (CTC), which enhances the sensitivity of the PMMA film.In this paper, the photochemical reaction mechanism of PMMA-based photopolymer is also discussed.