An efficient cavity for optically pumped terahertz lasers

被引：11
|
作者：
Miao, Liang [1 ]
Zuo, Duluo [1 ]
Jiu, Zhixian [1 ]
Cheng, Zuhai [1 ]
机构：
[1] Huazhong Univ Sci & Technol, Coll Optoelect Sci & Engn, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China
来源：
OPTICS COMMUNICATIONS | 2010年 / 283卷 / 16期
关键词：
THz laser; Cavity; Efficient; Etalon effect; High reflectivity; GENERATION;
D O I：
10.1016/j.optcom.2010.04.011
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The efficiency of a simply designed cavity for optically pumped pulsed terahertz lasers is studied experimentally. A coated Ge and a crystal quartz act as the input and output windows, respectively. The thickness of the Ge window is designed according to etalon effects to maximize terahertz reflectivity. NH3 is filled in the cavity as the active medium. When NH3 is pumped by the 10P(32) line of a TEA CO2 laser, intense 151.5 mu m terahertz radiation is emitted. As high as 19.6 mJ terahertz radiation is extracted from 1.57 J pump energy. The corresponding photon conversion efficiency reaches 35.3%. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：3171 / 3175
页数：5
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