PHOTOREFRACTIVE PROPERTIES OF UNDOPED, CR-DOPED, AND CU-DOPED POTASSIUM-SODIUM STRONTIUM BARIUM NIOBATE CRYSTALS

被引：27

作者：

TOMITA, Y ^{[1
]}

BERGQUIST, J ^{[1
]}

SHIBATA, M ^{[1
]}

机构：

[1] CANON INC,RES CTR,5-1 WAKAMIYA,ATSUGI,KANAGAWA 24301,JAPAN

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 1993年 / 10卷 / 01期

关键词：

D O I：

10.1364/JOSAB.10.000094

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We determine several photorefractive properties of undoped, Cr-doped, and Cu-doped (KyNa1-y)2z (SrxBa1-x)1-z Nb2O6 (KNSBN) crystals by means of two-beam coupling measurements. An elemental analysis of the crystals to determine their compositions and impurities is also performed. It is found that two-beam coupling gain of the Cr-doped KNSBN at 514.5 nm is enhanced by approximately 10 times that of the undoped KNSBN, while its response speed remains substantially unchanged. Longer-wavelength photorefractivity is also observed in the Cr-doped KNSBN. Quasi-periodic oscillations of the probe-beam intensity in the two-beam coupling experiment are observed in the Cu-doped KNSBN.

引用

页码：94 / 99

页数：6

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