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根据Kurtz粉末倍频理论,采用实验室设计搭建的测试装置,通过研究分析颗粒尺寸在范围46μm～250μm的双轴KIO3晶体粉末透射倍频光的相位匹配特性,建立了大的双折射双轴晶体粉末的倍频效率模型。通过这一模型可模拟出双轴晶体的倍频系数。结果表明,KIO3晶体粉末透射倍频光具有相位匹配特性,这与相关文献报道的结果相一致。数值模拟得到的KIO3晶体粉末的倍频系数与已报道的KIO3晶体的倍频系数相吻合。由此可见,我们所建立的模型是可行的,能够用于双轴晶体粉末倍频效应的研究。同时,我们在模拟研究中发现KIO3晶体属于第Ⅱ类相位匹配类型。
According to the Kurtz powder multiplication theory, a laboratory test apparatus was set up to study the phase matching characteristics of biaxial KIO3 crystal powder with a particle size ranging from 46μm to 250μm. A large birefringent biaxial crystal Frequency doubling efficiency model of powder. Through this model we can simulate the double frequency coefficient of biaxial crystal. The results show that the KIO3 crystal powder has a phase-matching characteristic of transmission doubling light, which is consistent with the results reported in the literature. The frequency multiplication factor of the KIO3 crystal obtained by numerical simulation is consistent with the reported frequency multiplication factor of KIO3 crystal. It can be seen that the model we established is feasible and can be used to study the double frequency effect of biaxial crystal powder. At the same time, we found in the simulation study that KIO3 crystals belong to the type Ⅱ phase matching.