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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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Zn:Ce:Fe:LiNbO_3晶体的光折变异常温度特性
Abstract:
在LiNbO3(LN)中掺入摩尔分数为2%的Zn,质量分数(下同)为0.1%的Ce和0.03%的Fe,采用提拉法生长具有不同摩尔比n(Li)/n(Nb)=0.94、1.10、1.25、1.40的ZnCeFeLiNbO3晶体。采用二波耦合光路测试晶体的指数增益系数,利用四波混频光路测试晶体的位相共轭性能。随着n(Li)/n(Nb)增加,ZnCeFeLiNbO3晶体指数增益系数和响应速率增加,位相共轭反射率增加。研究ZnCeFeLiNbO3晶体光折变温度效应时发现在55、70℃和110℃,在指数增益系数(Γ)–温度(T)曲线和位相共轭反射率(R)–T曲线上出现峰值,即晶体的指数增益系数和位相共轭反射率增加。采用结构相变解释了ZnCeFeLiNbO3晶体的异常温度特性。
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