| High Two-Beam Coupling Coefficients of Monolithic Small Molecule at Low Electric Field |
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| 作者姓名： | 张洁 陈志坚 黄毛毛 李福山 魏群 刘轶鸿 龚旗煌 |
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| 作者单位： | KeyStateLaboratoryforMesoscopicPhysicsandDepartmentofPhysics,PekingUniversity,Beijing100871 |
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| 摘 要： | A novel full-functional photorefractive small molecular material, (9-ethyl-9H-carbazol-3-ylmethylene)-(4-nitrophenyl)-amine (ECYENPA), was synthesized and its photorefractivity was studied by two-beam coupling experiments at a wavelength of 632.8nm. The glass transition temperature of ECYENPA, as low as -5℃, results in the chromophore being orientated easily at room temperature. High two-beam coupling coefficient was obtained to be 232cm^-1 at an electric field of 44.6 V/μm.
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| 关 键 词： | 光折射效应 双光束耦合系数 ECYENPA 低压电场 小分子材料 光电材料 玻璃转变温度 |
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