Influence of magnetic field on terahertz wave generation in photorefractive periodically poled lithium niobate crystal

被引：0

作者：

Li, Gaofang ^{[1
]}

Li, Dong ^{[1
]}

Ma, Guohong ^{[1
]}

Liu, Weimin ^{[2
]}

Tang, Sing Hai ^{[2
]}

机构：

[1] Shanghai Univ, Dept Phys, Shanghai 200444, Peoples R China

[2] Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore

来源：

APPLIED OPTICS | 2011年 / 50卷 / 08期

基金：

中国国家自然科学基金;

关键词：

OPTICAL RECTIFICATION;

D O I：

10.1364/AO.50.001082

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

By employing femtosecond pump-probe configuration, we successfully realized narrowband terahertz wave generation and detection in both photorefractive periodically poled lithium niobate (PPLN) and periodically poled Mg : LiNb3 (PP-Mg:LN) crystal. Using an applied magnetic field, we achieved modulation of the terahertz wave in a photorefractive PPLN crystal. The terahertz wave depends strongly on the magnitude of the applied magnetic field in the photorefractive PPLN crystal. Terahertz wave independence of the magnetic field in PP-Mg: LN crystal was also identified. The interaction of the magnetic field and photorefractive PPLN crystal is believed to occur due to the Lorentz force, which results in the buildup of a space-charge field in a photorefractive PPLN crystal. (C) 2011 Optical Society of America

引用

页码：1082 / 1086

页数：5

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