Near-infrared response of photorefractive crystals (K0.5Na0.5)(0.2)(Sr0.75Ba0.25)(0.9)Nb2O6:Cu and LiNbO3:Fe

被引：2

作者：

Guo, B ^{[1
]}

Yan, L ^{[1
]}

Zhang, H ^{[1
]}

He, XH ^{[1
]}

Shih, YH ^{[1
]}

机构：

[1] UNIV MARYLAND,DEPT PHYS,CATONSVILLE,MD 21228

来源：

JOURNAL OF APPLIED PHYSICS | 1996年 / 79卷 / 01期

关键词：

D O I：

10.1063/1.360792

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Material response relevant to volume holographic storage for photorefractive crystals (K0.5Na0.5)(0.2)(Sr(0.7)5Ba(0.25))(0.9)Nb2O6:Cu (KNSBN:Cu) and LiNbO3Fe was studied in the near-infrared region. The dark decay time for KNSBN:Cu was measured to be on the order of 10(6) s. The light-induced erasure time at the 1 mW/cm(2) read beam intensity can be >1000 h for both KNS8N:Cu and LiNbO3:Fe. Read beam diffraction efficiencies of 28.7% for KNSBN:Cu and 50% for LiNbO3:Fe were obtained at 706 nm when the refractive index grating was written at 706 nm. The decay rate of the refractive index grating with an extraordinary-wave read beam is about 3.6 times smaller than that with an ordinary-wave read beam for KNSBN:Cu. The results show that near-infrared light can be used to read holograms in the photorefractive volume holographic storage application. (C) 1996 American Institute of Physics.

引用

页码：72 / 76

页数：5

共 15 条

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