Lucchetta D E, Criante L, Simoni F
Dipartimento di Fisica e Ingegneria dei Materiali e del Territorio and Istituto Nazionale per la Fisica della Materia, Università di Ancona, Via Brecce Blanche, Ancona 60131, Italy.
Opt Lett. 2003 May 1;28(9):725-7. doi: 10.1364/ol.28.000725.
We show the possibility of detecting small anisotropies in holographic polymer dispersed liquid-crystal samples, using a simple experimental setup that allows us to determine the behavior of the diffraction efficiency versus incident angle for two reading polarizations. This analysis is extremely sensitive to small changes in the parameters that define the grating anisotropy, giving us a way to determine with great accuracy the components of the modulated part of the dielectric tensor.
我们展示了使用一种简单的实验装置来检测全息聚合物分散液晶样品中微小各向异性的可能性，该装置使我们能够确定两种读取偏振下衍射效率相对于入射角的行为。这种分析对定义光栅各向异性的参数的微小变化极其敏感，为我们提供了一种高精度确定介电张量调制部分分量的方法。
