中文摘要：

以MgO：LiNbO3为非线性光学介质，通过采用一种高性能腔反射镜实现了一种85mm短腔长的法布里-珀罗式的光学参量振荡器，产生THz电磁波的实验结果．这种短腔长THz参量振荡器比传统的160mm腔长的振荡阈值降低了22．3％；峰值能量提高了170％；频率调谐范围从0．5—2．4THz提高到0．8—3．1THz．还报道了一种基于平面金属丝网的法布里-珀罗干涉仪测量THz波线宽的实验结果．

英文摘要：

We realized a 85mm short cavity Fabry-Perot optical parametric oscillator by using high performance reflection mirror, and the experimental results of the THz wave output with this 85mm short cavity parametric oscillator based on the MgO： LiNbO3 Crystal are reported. Compared with the conventional 160mm parametric oscillator, the threshold decreases by 22.3 %, the peak energy output of THz wave increases by 170%, the frequency tuning range increases from 0.5-2.4THz to 0.8-3.0THz. The THz wave linewidth was measured by using a Fabry-Perot interferemeter based on the metal mesh plate.