两中心模型中光折变晶体吸收系数强度和温度特性理论研究

Theoretical study of the intensity dependence and temperature dependence absorption coefficient in photorefractive crystal at two-centre model

在光学研究中对两中心模型中光折变晶体吸收系数的强度和温度特性进行了参数的理论分析。结果显示 ,在两中心模型中 ,吸收系数有着复杂的强度和温度特性。浅能级和深能级的参数决定着它们对吸收系数特性的贡献。

The intensity dependence and the temperature dependence of absroption coefficient is studied theoretically for the two-centre photorefractive crystal.The results show that the intensity dependence and temperature dependence have more complicated behaviors in two-centre crystals.the contribution of shallow and deep level depending on the paramter of shallow and deep level.