| 基于非线性光学差频及参量效应的太赫兹源 |
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| 引用本文： | 王兵兵,黄敬国,陆金星,黄志明,沈学民. 基于非线性光学差频及参量效应的太赫兹源[J]. 激光与光电子学进展, 2011, 0(5) |
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| 作者姓名： | 王兵兵 黄敬国 陆金星 黄志明 沈学民 |
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| 作者单位： | 中国科学院上海技术物理研究所红外物理国家重点实验室;中国科学院研究生院; |
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| 基金项目： | 中国科学院重大科研装备研制项目(YZ200835)资助课题 |
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| 摘 要： | 基于非线性光学技术的THz源具有其独特的性能和优点,将基于非线性光学差频原理和光学参量效应,从理论上研究并分析THz波与抽运光、闲频光及相位匹配角之间的关系,得到THz波输出的条件和范围,并设计出宽波段连续可调的THz源。以调QNd∶YAG激光器和光学参量振荡器(OPO)作为抽运源,以GaSe和MgO∶LiNbO3晶体作为差频非线性晶体,根据相位匹配理论及光学参量效应,搭建两套THz波产生系统。其中,基于光学参量效应的THz辐射源有效地产生出THz信号。
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| 关 键 词： | 非线性光学 太赫兹 参量发生 受激极化声子散射 GaSe晶体 LiNbO3晶体 |
Terahertz Wave Sources Based on Difference Frequency Generation and Optical Parametric Processes |
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| Wang Bingbing, Huang Jingguo, Lu Jinxing, Huang Zhiming Shen Xuemin. Terahertz Wave Sources Based on Difference Frequency Generation and Optical Parametric Processes[J]. Laser & Optoelectronics Progress, 2011, 0(5) |
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| Authors: | Wang Bingbing Huang Jingguo Lu Jinxing Huang Zhiming Shen Xuemin |
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| Affiliation: | Wang Bingbing1,2 Huang Jingguo1,2 Lu Jinxing1,2 Huang Zhiming1 Shen Xuemin1(1National Laboratory for Infrared Physics,Shanghai Institute of Technical Physics,Chinese Academy of Sciences,Shanghai 200083,China2Graduate University of Chinese Academy of Sciences,Beijing 100049,China) |
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| Abstract: | The THz source based on the nonlinear optical effects possesses the special properties and advantages.A theoretical study has been made for the generation of widely tunable narrow-band THz wave based on the process of the difference frequency generation(DFG) and the stimulated polariton scattering in a GaSe crystal and a MgO doped LiNbO3 crystal,respectively.The relations among the THz wave,pump wave,idler wave and phase-matching angle are analysed.The condition and range of THz radiation generation are giv... |
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| Keywords: | nonlinear optics terahertz parametric generation stimulated polariton scattering GaSe crystal LiNbO3 crystal |
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