制备了掺杂甲基红(质量分数1 %)向列液晶薄膜样品,测量了Ar+ 激光的透过率与样品厚度之间的关系,发现激光的偏振方向与液晶指向矢方向垂直时,透射率最大.选择Ar+ 激光作为写入光,重点利用二波耦合实验测量了一阶衍射效率随样品厚度、入射光夹角、两束入射光光强、两束入射光光强比的变化关系,实验发现当液晶薄膜样品厚度为32 μm,两束入射光夹角为2 °,两束入射光光强分别为80 mW/cm2且光强比为1∶1时具有最佳的全息存储实验条件.
参考文献
| [1] | Günter G,Huignard J P.Photorefractive Materials and Applications[M].Berlin:Springer-verlag,1989:1-2. |
| [2] | Ducharme S,Scott J C,Tweig R J,et al.Observation of photorefractive effect in a polymer[J].Phys.Rev.Lett.,1991,66(14):1846-1850. |
| [3] | 任常愚,孙秀东,杨志永.聚合物分散液晶(PMMA∶5CB∶C60)光折变特性的实验研究 [J].液晶与显示,2003,18(6):399-404. |
| [4] | Khoo I C.Liquid crystal:Physical properties and nonlinear optical phenomena[M].NY:Wiley Interscience,1994. |
| [5] | Khoo I C,Li H,Liang Y.Observation of orientational photorefractive effects in nematic liquid crystals [J].Opt.Lett.,1994,19(21):1723-1725. |
| [6] | 任常愚,孙秀东,裴延波.偏振光下向列相液晶(5CB∶C60)取向光折变特性的研究[J].液晶与显示,2005,20 (1):1-6. |
| [7] | Simoni F,Francescangeli O,Reznikov Y,et al.Dye-doped liquid crystals as high-resolution recording media[J].Opt.Lett.,1997,22(8):549-551. |
| [8] | Zhang Guoquan,Montemezzani Germano,Gunter Peter.Orientational photorefractive effect in nematic liquid crystal with externally applied fields [J].J.Appl.Phys.,2000,88(4):1709-1717. |
| [9] | 李伯符.液晶物理--电场对液晶的作用与液晶的光学性质[J].液晶与显示,2001,16 (3):228-239. |
| [10] | Khoo I C,Slussarenko S,Guenther B D,et al.Optically induced space-charge fields,dc voltage,and extraordinarily large nonlinearity in dye-doped nematic liquid crystals[J].Opt.Lett.,1998,23(4):253-255. |
| [11] | Kaczmarek Malgosia,Shih Min-Yi,Cudney Rogers,et al.Electrically tunable,optically induced dynamic and permanent gratings in dye-doped liquid crystals[J].IEEE J.of Quantum Electronics,2002,38 (5):451-456. |
| [12] | 周海光,杨志林,陈明.掺杂染料的液晶层内空间电荷场及光折变研究[J].厦门大学学报,1999,36 (3):385-391. |
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