刘桂香, 鲁毅, 金香. 粉末倍频系数的模拟研究[J]. 应用光学, 2009, 30(3): 457-459.
引用本文: 刘桂香, 鲁毅, 金香. 粉末倍频系数的模拟研究[J]. 应用光学, 2009, 30(3): 457-459.
LIU Gui-xiang, LU Yi, JIN Xiang. Simulation on powder nonlinear coefficients[J]. Journal of Applied Optics, 2009, 30(3): 457-459.
Citation: LIU Gui-xiang, LU Yi, JIN Xiang. Simulation on powder nonlinear coefficients[J]. Journal of Applied Optics, 2009, 30(3): 457-459.

粉末倍频系数的模拟研究

Simulation on powder nonlinear coefficients

  • 摘要: 根据Kurtz粉末倍频理论,使用光纤光谱仪自行设计搭建一个粉末倍频测试系统,该系统可在基频光波入射方向不变的情况下,通过转动旋转臂在不同方向探测二次谐波,并且具有较高的精确度和灵敏度。使具有位相匹配特性的颗粒尺寸范围扩大为46m~250m 。使用波长为1.064m的基频光,对KIO3晶体粉末的倍频效应进行了测试。测试结果表明,KIO3晶体粉末透射倍频光具有位相匹配特性。这一测试结果与已报道结果相一致。通过数值模拟实验测试曲线,获得了KIO3晶体粉末的倍频系数d2的值为9.710-12m/V。这一模拟值与已报道的KIO3晶体对该基频光波产生的倍频系数d32的值相吻合。由此可见,该方法切实可行。并且可推广应用到其他晶体材料的非线性特性测试研究。

     

    Abstract: Based on the Kurtz theory, a measurement system of powder second-harmonic (SHG) using fiber spectrometer was designed. The test system can measure SHG in different directions by rotating the arm and not changing-direction of incident fundamental light. It has good accuracy and sensitivity. It enlarges phase-matching particles from 46m to 250m. The fundamental wavelength of 1.064m was used to measure KIO3 crystal powder SHG. The test result shows that KIO3 crystal powder has the phase-matching characteristics, which is consistent with the previous reports. The nonlinear coefficient d2 of KIO3 crystal powder obtained by simulating the experimental curve is 9.710-12m/V. The simulation value agrees with d32 of KIO3 crystal reported previously. This method is proved feasible and could be used in the study of nonlinear characteristics for other crystal materials.

     

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