Cu:Fe:LN晶体光折变性能的研究  

Research on Photorefractive Properties of Fe:LN Crystal Doping with Cu

作　　者：刘波[1] 刘振宏[1] 毕建聪[1] 徐玉恒[1] 

机构地区：[1]哈尔滨理工大学化学与环境工程学院,黑龙江哈尔滨150040

出　　处：《压电与声光》2008年第3期340-342,共3页Piezoelectrics & Acoustooptics

摘　　要：在Fe∶LN晶体中掺进不同质量分数(0.08%、0.12%、0.16%)的CuO以提拉法生长Cu∶Fe∶LN晶体,对晶体进行极化,还原或氧化处理后,对晶体的抗光致散射能力,衍射效率,写入时间和擦除时间进行了测试,计算光折变灵敏度和动态范围。结果表明,Cu∶Fe∶LN晶体全息存储性能优于Fe∶LN晶体。以Cu∶Fe∶LN晶体中Cu作为深能级,Fe作为浅能级,可实现双光子全息存储,且衍射效率不随时间发生变化。Doping with different concentration （in mass） （0. 08%, 0. 12%, 0. 16%, respectively） CuO in 0.05% Fe ： LN, Cu ： Fe ： LN crystals were grown by Czochralski method. The polarization, reducing and oxidation were gone on. The scattering resistance ability and diffraction efficiency, writing time and erasure time of those crystals were measured. The photorefraction sensitivity and dynamic range were calculated. The holographic storage properties of Cu ： Fe ： LN crystals are superior to Fe ： LN crystal. Two photon storage experiment of Cu ： Fe ： LN crystals were gone on with Cu as deep energy level while Fe as shallow energy level in Cu ： Fe ： LN crystals. The experiment results show that the diffraction efficiency not change with time increase.

关 键 词：Cu:Fe:LN晶体 光折变性能 衍射效率 

分 类 号：O734[理学—晶体学]