Taunay T, Niay P, Bernage P, Xie E X, Poignant H, Boj S, Delevaque E, Monerie M
Opt Lett. 1994 Sep 1;19(17):1269-71. doi: 10.1364/ol.19.001269.
A holographic method was used to write refractive-index gratings in ZBLAN fluoroziroconate glasses or fibers doped by a Ce concentration of 5000 or 10,000 parts-in-10(6) weight. Direct pumping of the (2)F(5/2)-5d transitions of Ce(3+) ions near 245 nm resulted in a change in the refractive index. The photoinduced change partly recovered on a time scale of several hours at room temperature. The remaining change in the refractive index looked stable on a time scale of a month. This permanent change reaches 2 x 10(-5) at 1560 nm.
采用全息方法在铈（Ce）浓度为百万分之5000或10000重量份掺杂的ZBLAN氟锆酸盐玻璃或光纤中写入折射率光栅。直接泵浦245nm附近Ce(3+)离子的(2)F(5/2)-5d跃迁会导致折射率发生变化。在室温下，光致变化在几小时的时间尺度上部分恢复。在一个月的时间尺度上，折射率的剩余变化看起来是稳定的。在1560nm处，这种永久性变化达到2×10^(-5)。
