Tomlinson W J, Aumiller G D
Appl Opt. 1975 May 1;14(5):1100-4. doi: 10.1364/AO.14.001100.
We describe a new technique for measuring the refractive index change associated with the photoinduced absorption change in photochromic materials. The technique involves writing a thick holographic grating in a sample of the material and observing the interaction of the grating with the beams used to write it. Only three relative intensity measurements are required, and many of the difficulties of previous techniques are avoided. We have demonstrated the technique in experiments on a photodimer material. These experiments also provide an example of a modulated transmission effect related to the Borrmann effect.
我们描述了一种用于测量与光致变色材料中光致吸收变化相关的折射率变化的新技术。该技术包括在材料样品中写入一个厚全息光栅，并观察该光栅与用于写入它的光束之间的相互作用。只需要进行三次相对强度测量，并且避免了先前技术中的许多困难。我们已经在一种光二聚体材料的实验中演示了该技术。这些实验还提供了一个与博尔曼效应相关的调制透射效应的例子。
