NEAR-INFRARED PHOTOREFRACTIVITY IN CR-DOPED POTASSIUM-SODIUM STRONTIUM BARIUM NIOBATE SINGLE-CRYSTAL

被引:6
作者
BERGQUIST, J
TOMITA, Y
SHIBATA, M
机构
[1] Canon Inc., Research Centre, Atsugi, 243-01
来源
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 1992年 / 55卷 / 01期
关键词
D O I
10.1007/BF00324603
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We report on the photorefractive properties of a Cr-doped (K1-xNax)2A-2 (SryBa1-y)2-ANb10O30 (x = 0.586, y = 0.659, A = 1.12) single crystal in the near-infrared spectrum. The sample exhibits photorefracitivity for wavelengths up to at least 840 nm where the steady-state two-beam coupling gain is found to be larger than 2 cm-1. Photorefractive gain and decay rate are measured as a function of wavelength, grating spacing and intensity. The wavelength dependence of gain fluctuations in two-beam coupling are also measured.
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页码:61 / 64
页数:4
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