掺杂LiNbO_3晶体生长及在体全息存储方面的应用研究

作     者：刘国庆 刘金伟 陶世荃 江竹青 

作者机构：北京工业大学应用物理系北京100022 

出 版 物：《人工晶体学报》 (Journal of Synthetic Crystals)

年 卷 期：2000年第29卷第S1期

页      面：172-页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

主　　题：LiNbO 3 crystal crystal pu lling Holographic Storage doping 

摘      要：In this paper,the Fe:LiNbO 3,Ce:Fe:LiNbO 3 and Ce:Mn:LiNbO 3 crystals with n o defect,were grown from melt by Czochraski *** two doped LiNbO 3 cry stals were treated by heating reduction in Li 2O 3 powder,and Fe:LiNbO 3 crys tals were oxidized in air. The measurments on lattic constants and the absorption spectrum show that the doped crystals’ structure are regular and the optical pr operties are *** absorption spectra,diffractive efficency,response time,sen sitivity,and photoconduction were *** properties of Ce:Fe:LiNbO 3 crys tals are η sat =0.25, Sη -1 =16.2mJ/mm 2, τ E/ τ W=6 .5, σ =2.99×10 -17 ;and the properties of Ce:Fe:LiNbO 3 crystals are η sat =0.70, Sη -1 =4.6mJ/mm 2, τ E/ τ W=7.2, σ =5. 42×10 -17 . The response speed of two doped LiNbO 3 crystals is faster than that of Fe:LiNbO 3 *** diffractive efficiency was measured to be high er than 80% and with a broad angle ***:LiNbO 3 crystals were oxidized in air in order to make the storage time longer and strength the diffractive effici *** it is a good kind of Volume Holographic memory *** it is shown in our experiment that Ce:Fe:LiNbO 3 crystals is more sensitive to 633nm than Fe:LiNbO 3 crystals,it is more fit for He Ne laser and is a better materials o f Volume Holographic Storge.