GaAs参量振荡产生太赫兹波的腔相位匹配研究  

Study of Cavity Phase Matching for Terahertz Wave Generation Based on GaAs OPO

作　　者：王翠玲[1] 徐世林[1] 

机构地区：[1]山东科技大学理学院太赫兹技术重点实验室,青岛266590

出　　处：《红外》2013年第11期31-36,共6页Infrared

基　　金：山东科技大学春蕾计划(2010AZZ083)资助课题

摘　　要：基于腔相位匹配的方法,研究了GaAs微片状晶体构成的光学微腔光参量振荡产生太赫兹波的条件与参数设计。计算了腔相位匹配下GaAs晶体的最优化腔长,通过调节GaAs晶体的温度研究了太赫兹波的输出情况,模拟了不同波长下最低的能量阈值。结果表明,在完全相位匹配很难实现的情况下,采用腔相位匹配能很容易地实现大范围的太赫兹波调谐输出。结果为小型化光学太赫兹源的实验与理论研究提供了参考。The condition and parameter design for an optical microcavity parametric oscillator formed by micro-flake GaAs crystals to generate terahertz （THz） wave were studied according to a cavity phase matching method. The optimum cavity length under the cavity phase matching condition was calculated. The output of THz wave was studied by adjusting the temperature of the GaAs crystal. The lowest energy thresholds at different wavelengths were simulated. The result showed that a wider tunable THz output range could be achieved more easily by using the cavity phase matching when the perfect phase-matching was difficult to realize. This result could provide experimental and theoretical reference for the development of miniature optical THz sources.

关 键 词：太赫兹波 腔相位匹配 GAAS晶体 光参量 

分 类 号：O437[机械工程—光学工程]