Ce∶KNSBN光折变晶体光栅衍射特性研究  

Diffraction Property of Photorefractive Volume Grating in Ce∶KNSBN Crystal

作　　者：梁宝来[1] 王肇圻[1] 官玖洪[1] 母国光[1] 傅汝廉[1] 

机构地区：[1]南开大学现代光学研究所

出　　处：《光学学报》2000年第8期1021-1025,共5页Acta Optica Sinica

摘　　要：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 relation between the diffraction efficiency of volume grating written by two wave mixing in Ce∶KNSBN photorefractive crystal and writing beam parameters such as polarization and beam ratio was studied. The phenomenon that the diffraction efficiency strongly depends on writing beams polarization was analyzed, and the modified coupled wave theory was used to fit the experimental data. The results give a powerful support to the application of Ce∶KNSBN crystal in holographic recording and optical information process.

关 键 词：光折变光栅 衍射效率 两波耦合 光折变晶体 

分 类 号：O734.1[理学—晶体学]