摘要
We present a method of measuring the parameters of a photorefractive crystal in codirectional two-wave mixing that is suitable for two-wa.ve mixing in the intermediate stage(before saturation).Three parameters of a crystal,the exponential gain coefficient,saturation intensity and intensity absorption coefficient,can be measured simultaneously by using this method.The three parameters of a Ce:KNSBN are measured and the measured data are checked by another independent measurement.
