An Efficient Pulsed CH3OH Terahertz Laser Pumped by a TEA CO2 Laser

被引：15

作者：

Jiu Zhi-Xian ^{[1
]}

Zuo Du-Luo ^{[1
]}

Miao Liang ^{[1
]}

Qi Chun-Chao ^{[1
]}

Cheng Zu-Hai ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Coll Optoelect Sci & Engn, Wuhan 430074, Peoples R China

来源：

CHINESE PHYSICS LETTERS | 2010年 / 27卷 / 02期

关键词：

FAR-INFRARED-LASER; METHYL-FLUORIDE; LINES; METHANOL; ASSIGNMENTS;

D O I：

10.1088/0256-307X/27/2/024211

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

An efficient pulsed CH3OH terahertz (THz) laser pumped by a TEA CO2 laser is investigated experimentally. To improve photon conversion efficiency and THz laser energy, two cavity configurations of the TEA CO2 laser, which is external and semi-external, are evaluated. The pump intensities are about 4.7 MW/cm(2) and 1.2 MW/cm(2), respectively. Higher pump intensity and more stable single lines are obtained in the external cavity. For the 3.8 J pump energy of the 9P(16) transition in the external cavity, the maximum terahertz output energy with 570.5 mu m wavelength at 160Pa is 431 mu J. With a 6 J energy pulse in terms of a semi-external cavity, a 353 mu J terahertz emission (570.5 mu m) is produced. The corresponding photon conversion efficiencies are 1.36% and 0.705%, increasing by a factor of about 2.

引用

页数：3

共 21 条

[1] 10-W METHYL FLUORIDE LASER AT 496 MUM [J].