| 1. | The photorefractive effects was introduced . the applications of the photorefractive materials in optical information technology such as holographic storage ， real time information processing and holographic interferometry ， etc . were discussed
简要介绍光折变材料的光折变效应及其在光信息技术中的应用：全息存储、实时信息处理、全息干涉计量等 |
| 2. | Abstract : the photorefractive effects was introduced . the applications of the photorefractive materials in optical information technology such as holographic storage ， real time information processing and holographic interferometry ， etc . were discussed
文摘:简要介绍光折变材料的光折变效应及其在光信息技术中的应用：全息存储、实时信息处理、全息干涉计量等 |
| 3. | On the basis of these theories , detailed experiment investigations are carried out as follows : ( 1 ) the interference pattern of two - prism is adopted to illuminate linbo3 : fe crystals . then array of planar waveguides are fabricated in the crystals due to photorefractive effect
在此基础上，详细地进行了以下几个方面的实验探讨： ( 1 )利用平行光通过双棱镜后所形成的干涉光场辐照linbo _ 3 ： fe晶体，在晶体中写入阵列平面光波导。 |
| 4. | Abstract : brief introduction to ( 2 ) cascading nonlinearities is presented . the enhancement mechanisms for optical kerr effect and the photorefractive effect as ( 2 ) cascading process are discussed . mutual inductance between quadric and cubic nonlinearities opens possibilities for engineering optical nonlinearities
文摘:介绍了( 2 )串级非线性.讨论了串级光克尔非线性和串级光折变非线性的增强机制，并指出二阶和三阶非线性的相互转化，为光学非线性工程设计提供了可行性 |
| 5. | By examining the micro mechanism of photorefractive effect , we can find that an external dc electric - field can greatly alter ( improve or worsen ) the photorefractive properties of sbnrcr . so it is important to study electric - field effects in these materials . in this thesis , the characters of beam coupling and transmission in sbn : cr crystals under external dc electric - fields are investigated theoretically and experimentally
本文依据光折变非线性光学的光波耦合理论和传输理论，对sbn cr晶体在外加直流电场作用下的光波耦合特性和传输特性进行了理论分析和实验研究，主要内容包括： ( 1 )从理论上分析了外加直流电场对光折变二波耦合增益的影响，给出了sbn 60晶体的强度增益系数随外加电场变化的理论计算曲线。 |
| 6. | We present a charge - transport model of the photorefractive effect with two deep traps ( two deep - trap model ) based on one deep - trap model and shallow - deep - trap model . we also found dark decay behaviors which accord with the two deep - trap model in the two - beam interference experiments . the fast decay - time constant of the space - charge field is obtained as 714s
此外，在ce ： batio _ 3双光束干涉光折变光栅的暗衰减实验中，也观察到了符合双deep模型的衰减现象，得到光折变空间电场快衰减时间常数714s ，约12分钟。 |
