Schiek R, Sundheimer M L, Kim D Y, Baek Y, Stegeman G I, Seibert H, Sohler W
Opt Lett. 1994 Dec 1;19(23):1949-51. doi: 10.1364/ol.19.001949.
We report on interferometric measurements of nonlinear phase shifts of the fundamental mode that are due to cascading in a second-harmonic-generation experiment in lithium niobate channel waveguides. With temperature tuning of the wave-vector mismatch the nonlinear phase shifts were adjustable in sign and magnitude. Varying the wave-vector matching condition along the waveguide leads to large phase shifts with low depletion and dispersion of the fundamental.
我们报告了在铌酸锂通道波导中的二次谐波产生实验中，由于级联效应导致的基模非线性相移的干涉测量结果。通过对波矢失配进行温度调谐，非线性相移在符号和大小上均可调节。沿着波导改变波矢匹配条件会导致较大的相移，同时基模的损耗和色散较低。
