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。
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.
出处
《光电工程》
EI
CAS
CSCD
北大核心
2006年第3期114-118,共5页
Opto-Electronic Engineering
关键词
太赫兹
非线性光学
相位匹配
光学参量振荡器
Terahertz-wave
Non-linear optics
Phase matching
Optical parametric oscillator
