Photorefractive effects in ZnO nanorod doped liquid crystal cell.
Photorefractive effects in ZnO nanorod doped liquid crystal cell.
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DOI：
10.1364/ao.50.001101
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发表时间：
2011-03
期刊：
影响因子：
1.9
通讯作者：
Yubing Guo;Yonghai Chen;Y. Xiang;S. Qu;Zhan-guo Wang
中科院分区：
文献类型：
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作者：
Yubing Guo;Yonghai Chen;Y. Xiang;S. Qu;Zhan-guo Wang
在强迫光散射实验中，衍射效率达到稳定状态后，直流（DC）电压和两个写入光束都被关闭，然后通过重新施加DC电压，我们观察到一个峰值。我们提供了一个基于周期性变化的锚定能量的解释，并讨论了不同的光栅常数，激光偏振，和液晶盒的光轴方向下的衍射效率的演变。实验结果表明，光引入的电荷密度与写入光的强度近似成正比。
In a forced light scattering experiment, after the diffraction efficiency arrives to a stable state, both direct current (DC) voltage and two writing beams are turned off, and then by reapplication of the DC voltage we observed a peak. We provide an explanation based on periodically changed anchoring energy and also discuss the evolution of diffraction efficiency under different grating constants, laser polarization, and the direction of the optical axis of a liquid crystal cell. Experiment results show that photo-introduced charge density is nearly in proportion to the intensity of writing beams.