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为了更好地解决用旋光晶体制作电光Q开关中的问题,需要从理论上对光的传播方程进行研究。通过对硅酸镓镧旋光晶体中电光效应和旋光效应对光的偏振态影响的研究,推导出了处于外加电场中的旋光晶体中光的传播方程的表达式,以及透过光强的表达式,并利用几种简单的光学器件在实验上得到了很好的验证。利用光的传播方程和实验的结果,推算出硅酸镓镧晶体电光系数1γ1=2.1×10-12m/V,与以前测量的结果吻合得很好;找到了利用旋光晶体制作电光开关应该满足的条件,给出了一种制作方法,在实验上得到了很好的实现,从而证实了旋光晶体作为电光开关材料的可行性。
In order to solve the problem of electro-optic Q switch by using optical crystal, the propagation equation of light needs to be theoretically studied. Through the study of the influence of the electro-optical effect and the optical rotation effect on the polarization state of light in the lanthanum silicate optical crystal, the expression of the propagation equation of light in the optically active crystal in the applied electric field is deduced, and the expression of the transmitted light intensity , And using several simple optical devices in the experiment has been well verified. Based on the propagation equation of light and the experimental results, the electro-optical coefficient 1γ1 = 2.1 × 10-12m / V of Ga3Ga3O12 crystal is deduced and it is in good agreement with the previous measurement results. It is found that the electro-optical switch Conditions, gives a production method, experimentally obtained well achieved, thus confirming the feasibility of optically active crystal as an electro-optical switch material.