摘要
提出了掺铁铌酸锂晶体的高阶非线性效应产生双频相位共轭波的实验过程.混频作用形式归结为非简并六波混频,同时产生了2个不同频率的相位共轭波:一个类似于非简并四波混频的相位共轭波,另一个完全区别于非简并四波混频的情况分别测量了二共轭光强度与参量的关系,对二者进行了比较.提出作用过程中存在着五阶非线性效应,认为二共轭光束是由二次不同级的非线性作用产生的.据此进行理论计算的结果与实验结果基本一致.
A demonstration of dual phase conjugation waves via hign-order nonlinear effect by non-degenerate six-wave mixing in iron doped lighium niobate is presented. In experiment, two conjugation wave 1 is similar with results if non-degenerate four-wave mixing, conjugation wave 2 is different from that compoletely. In the expariments the intensies and other parametars of the two conjugation waves are measured and compared. In order to explain the experimental results, it is supposed that there is a fifth-order non- linear effect in crystal and the two conjugation waves are helived to be generated via non- linear interaction of different levels. Theoretical reasoning agrees with experimentalones.
出处
《北京师范大学学报（自然科学版）》
CAS
CSCD
1989年第1期27-31,共5页
Journal of Beijing Normal University(Natural Science)
基金
中国科学院科学基金
关键词
铌酸锂
铁
晶体
非线性效应
共轭波
dual conjugation waves, high-order nonlinear effect, non-degenerate, six-wave mixing.
