Li Y, Liu S, Yang M, Yang K, Xu K, Hou F
Opt Lett. 1997 Feb 15;22(4):212-4. doi: 10.1364/ol.22.000212.
We demonstrate superior holographic storage performance in a cobalt doped potassium sodium strontium barium niobate (Co:KNSBN) crystal that possesses a fast response time of 1.4 ms, a large photorefractive sensitivity of 13 x 10(-3) cm(3) J(-1) under a total writing intensity of 1 W/cm(2) , and high spatial resolution of 45 line pairs/mm. Reconstructed images with high fidelity have been obtained in real-time holographic storage. The dynamic properties of the index grating, the dependence of response time on writing intensity, and the dark decay of diffraction signal with increased writing intensity indicate that two species and shallow traps exist in Co:KNSBN crystal.
我们在钴掺杂铌酸钾钠锶钡晶体（Co:KNSBN）中展示了卓越的全息存储性能，该晶体具有1.4毫秒的快速响应时间、在1瓦/平方厘米的总写入强度下13×10⁻³立方厘米/焦耳的大光折变灵敏度以及45线对/毫米的高空间分辨率。在实时全息存储中已获得高保真的重建图像。折射率光栅的动态特性、响应时间对写入强度的依赖性以及衍射信号随写入强度增加的暗衰减表明Co:KNSBN晶体中存在两种浅陷阱。
