Ehrlich-Holl B, Krol D M, Stolen R H, Tom H W
Opt Lett. 1992 Mar 15;17(6):396-8. doi: 10.1364/ol.17.000396.
We study saturation of photoinduced second-harmonic generation in a Ge-doped silica fiber by modulating the relative phase between the fundamental and second-harmonic writing beams. We shift the phase by pi and present measurements that identify saturation that is due to site depletion and saturation that is due to a backfield.
我们通过调制基波与二次谐波写入光束之间的相对相位，研究了掺锗石英光纤中光致二次谐波产生的饱和现象。我们将相位移动了π，并给出了测量结果，这些结果确定了由位点耗尽引起的饱和以及由背场引起的饱和。
