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研究了Ce∶KNSBN光折变晶体两波耦合作用写入体光栅的衍射效率与写入光偏振态和光强比的关系 ,分析了写入光偏振态造成光栅衍射效率差别的原因 ,并用修正耦合波理论对实验结果进行了拟合。实验结果为Ce∶KNSBN晶体在全息记录和光学信息处理领域的应用提供了依据。
The relationship between the diffraction efficiency of write grating and the polarization state and light intensity ratio of written light was studied. The reason why the polarization state of written light caused the grating diffraction efficiency was analyzed. Coupled wave theory fitted the experimental results. The experimental results provide the basis for the application of Ce: KNSBN crystal in holographic recording and optical information processing.