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采用二波耦合和四波混频实验,研究了Zn:Fe:LN(Fe:0.03wt.%,Zn:5.0mol)晶体的光折变二波耦合衍射效率和长时间照射下透射光强随时间的动态变化行为,以及其相位共轭效应,分别测试了其二波耦合衍射效率和其相位共轭反射率,结果表明该晶体的衍射率可达到56%,且其衍射效率随着其信号光的减小先增大后减小,相位共轭反射率随信号光的增大呈减小的趋势,最高共轭反射率可达到650%。
The two-wave coupling and four-wave mixing experiments were used to study the photorefractive two-wave coupling diffraction efficiency of Zn: Fe: LN (Fe: 0.03wt.%, Zn: 5.0mol) Time dynamic change behavior and its phase conjugate effect, the two-wave coupling diffraction efficiency and its phase conjugate reflectivity were tested respectively. The results show that the diffraction rate of this crystal can reach 56%, and its diffraction efficiency increases with its signal The decrease of light firstly increases and then decreases, while the phase conjugate reflectivity decreases with the increase of signal light, and the highest conjugate reflectivity can reach 650%.