Santamato E, Shen Y R
Opt Lett. 1984 Dec 1;9(12):564-6. doi: 10.1364/ol.9.000564.
The wave-front curvature of an incident laser beam can modify the spatial phase modulation of the beam, and hence the diffraction of the beam, traversing a liquid-crystal film. It is shown both theoretically and experimentally that this explains the anomalous fine structure in the diffraction ring pattern observed with laser intensities above the Freederickscz transition threshold.
入射激光束的波前曲率可以改变光束的空间相位调制，从而改变光束穿过液晶薄膜时的衍射。理论和实验均表明，这解释了在高于弗雷德里克兹转变阈值的激光强度下观察到的衍射环图案中的异常精细结构。
