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Photorefractive Polymer System with a Low Glass Transition Temperature for a Holographic Recording
Kim, Nam-Jun,Chun, Hyun-Aee,Moon, In-Kyu,Joo, Won-Jae,Kim, Nak-Joong Korean Chemical Society 2002 Bulletin of the Korean Chemical Society Vol.23 No.4
The photorefractive polymeric composite with good performance was prepared. The carbazole-substituted polysiloxane sensitized by 2,4,7-trinitro-9-fluorenone was used as a photoconducting medium and 1-[4-(2-nitrovinyl)phenyl]piperidine was added as an optically nonlinear chromophore. The photorefractive property of polymer was determined by diffraction efficiency using a 100 ㎛-thick film. The maximum diffraction efficiency ( ηmax) of 71% was obtained at the electric field of 70 V/ ㎛. The potential of the current polymer material as a holographic recording medium was evaluated by the demonstration of holographic recording and subsequent reading of optical image.