| 用参量法通过LiNbO3晶体产生太赫兹的理论设计 |
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| 引用本文： | 西迪科,张维,李卓,杨苏辉.用参量法通过LiNbO3晶体产生太赫兹的理论设计[J].光电工程,2006,33(3):114-118. |
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| 作者姓名： | 西迪科 张维 李卓 杨苏辉 |
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| 作者单位： | 北京理工大学,信息科学技术学院,光电工程系,北京,100081 |
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| 摘 要： | 按照参量振荡器的基本原理,从理论上设计了一个太赫兹参量振荡器。根据动量守恒、能量守恒条件以及相位匹配条件,应用铌酸锂(LiNbO3)晶体,给出了理论设计过程。画出了频率在太赫兹波段,波长与折射率的关系曲线,分析了太赫兹参量振荡器的非共线相位匹配条件,确定了晶体形状及其切割角、输出太赫兹波的可调谐范围,并画出了晶体为铌酸锂时相应的曲线,根据有效的输出功率,最后设计出最佳的太参量振荡器的结构。
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| 关 键 词： | 太赫兹 非线性光学 相位匹配 光学参量振荡器 |
| 文章编号： | 1003-501X(2006)03-0114-05 |
| 收稿时间： | 2006-01-06 |
| 修稿时间： | 2006-02-28 |
Theoretical design of terahertz-wave parametric oscillator using LiNbO3 crystal |
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| SIDDIQUE Muhammad,ZHANG Wei,LI Zhuo,YANG Su-hui.Theoretical design of terahertz-wave parametric oscillator using LiNbO3 crystal[J].Opto-Electronic Engineering,2006,33(3):114-118. |
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| Authors: | SIDDIQUE Muhammad ZHANG Wei LI Zhuo YANG Su-hui |
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| Affiliation: | Department of Photo-electronic Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | A theoretical design has been made for terahertz-wave parametric oscillator based on the basic principle of optical parametric oscillator. Paper describes theoretical calculation method, based on phase matching conditions by using Lithium Niobate (LiNbO3) non-linear crystal and this should also fulfill energy and the momentum conservation laws. To design the structure of terahertz-wave parametric oscillator, we have drawn the graphs of the relationship between the refractive index and wavelength when the frequency is in the terahertz region, analyzed the non-collinear phase-matching conditions of the terahertz optical parametric oscillator and draw the characteristics curves for LiNbO3. The shape of the crystal and the angle of cutoff crystal, the tuning range, and also designed the optimal shape of the oscillator for efficient coupling output power. |
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| Keywords: | Terahertz-wave Non-linear optics Phase matching Optical parametric oscillator |
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