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首页> 外文期刊>Journal of Applied Polymer Science >Photorefractivity and Transmission-Type Holograms of a Poly(N-vinylcarbazole)-Based Composite with N-4-nitrophenyl-(1)-prolinol as Chromophore
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Photorefractivity and Transmission-Type Holograms of a Poly(N-vinylcarbazole)-Based Composite with N-4-nitrophenyl-(1)-prolinol as Chromophore

机译：N-4-硝基苯基-（1）-脯氨醇为发色团的聚（N-乙烯基咔唑）基复合材料的光折射率和透射型全息图

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摘要

The photorefractivity of a poly(N-vinylcarbazole)/2,4,7-trinitro-9-fluoren-one/N-4-nitrophenyl-(l)-prolinol/N-ethylcarbazole composite was investigated by two-beam coupling and degenerate four-wave mixing experiments.The composite in a weight ratio 35:1:50:15 exhibited a 22% steady-state diffraction efficiency and 70cm~(-1) two-beam coupling coefficient at the applied external field of 55 V/#mu#m. Zero applied field transmission-type holograms were observed in the photorefractive sample as well as the spin-coated thin film. The dynamic decay of diffraction light indicated that there existed two contributors with different phase-shift, and the slow decay time can be as long as several h under continuous illumination by the readout beam.
机译：聚（N-乙烯基咔唑）/ 2,4,7-三硝基-9-芴酮一/ N-4-硝基苯基-（l）-脯氨醇/ N-乙基咔唑复合物的光折射率通过两束耦合研究并降解重量比为35：1：50：15的复合材料在55 V /＃的外加电场下表现出22％的稳态衍射效率和70cm〜（-1）的两束耦合系数。 mu＃m。在光折射样品以及旋涂薄膜中观察到零施加的场透射型全息图。衍射光的动态衰减表明存在两个具有不同相移的贡献者，并且在读出光束连续照射下，缓慢的衰减时间可以长达几小时。

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