Output-Mirror-Tuning Terahertz-Wave Parametric Oscillator with an Asymmetrical Porro-Prism Resonator Configuration

被引：3
|
作者：
Zhang, Ruiliang [1 ]
Qu, Yanchen [1 ]
Zhao, Weijiang [1 ]
Liu, Chuang [1 ]
Chen, Zhenlei [1 ]
机构：
[1] Harbin Inst Technol, Natl Key Lab Sci & Technol Tunable Laser, Harbin 150080, Peoples R China
来源：
JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES | 2017年 / 38卷 / 06期
关键词：
Terahertz-wave parametric oscillator; Porro-prism resonator; Output mirror tuning; CAVITY;
D O I：
10.1007/s10762-017-0375-0
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We demonstrate a terahertz-wave parametric oscillator (TPO) with an asymmetrical porro-prism (PP) resonator configuration, consisting of a close PP corner reflector and a distant output mirror relative to the MgO:LiNbO3 crystal. Based on this cavity, frequency tuning of Stokes and the accompanied terahertz (THz) waves is realized just by rotating the plane mirror. Furthermore, THz output with high efficiency and wide tuning range is obtained. Compared with a conventional TPO employing a plane-parallel resonator of the same cavity length and output loss, the low end of the frequency tuning range is extended to 0.96 THz from 1.2 THz. The highest output obtained at 1.28 THz is enhanced by about 25%, and the oscillation threshold pump energy measured at 1.66 THz is reduced by about 4.5%. This resonator configuration also shows some potential to simplify the structure and application for intracavity TPOs.
引用
收藏
页码：653 / 659
页数：7
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