一个新LiNbO_3晶体探测器理论计算方法

A New Crystal LiNbO_3 Detector Calculating Method

对一种新的用于超快电磁脉冲检测的晶体探测器，首次给出一个普遍情况下的理论计算方法，用此方法，不需要将任意辐射场下产生的折射率二次方程标准化，而可以在原主轴坐标系中直接将测量值△φ与辐射场强Ｅ。连系起来．根据辐射场在晶体中分布与超快脉冲群速度失配，还给出了探测器制作的尺寸要求。

For a new crystal LiNbO3 detector, a new theoretic calculating method is presented for the first time. In this method, the phase retardation is directly related to the radiation field without the standardization of quadratic equation under the arbitrary field. Taking into account of the distribution of the field and group velocity mismatch we also give the optimized size of the new detector.