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7. Recent progress in mid-infrared laser technology

Author

Chen Fei, Ruan Peng, Tan Gai-juan, Guo Jin, Yang Xin-xin, Shao Chun-lei, Zhang Lai-ming, Yang Gui-long, and Xie Ji-jiang

Subjects
Distributed feedback laser, Materials science, business.industry, Far-infrared laser, General Engineering, Physics::Optics, Laser pumping, Laser, law.invention, X-ray laser, Laser linewidth, Optics, law, Diode-pumped solid-state laser, Optoelectronics, Physics::Atomic Physics, Laser power scaling, business, Astrophysics::Galaxy Astrophysics
Abstract

3 ～ 5 μm mid-infrared laser sources have significant applications in many fields and have been intensively studied by researchers.Main technical methods to generate mid-infrared laser radiation are reviewed in this paper,which are as follows: second harmonic generation of CO2 laser,first-overtone CO laser,optical parametric oscillator,DF laser,Fe2 +∶ ZnSe solid laser.The key techniques and problems of each method are concluded and analyzed.The technology tendencies of mid-infrared laser sources are summarized.

Published
2013

14. Research progress of non-chain HF/DF laser

Author

WANG Xu, 王旭, primary, XIE Ji-jiang, 谢冀江, additional, PAN Qi-kun, 潘其坤, additional, WANG Chun-rui, 王春锐, additional, SHAO Chun-lei, 邵春雷, additional, and SHAO Ming-zhen, 邵明振, additional

Published
2015
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26. [Photolysis of simulating CS2 malodorous gas using microwave electrodeless lamps].

Author

Shao CL, Xia LY, Gu DH, Zhang RX, and Hou HQ

Subjects
Air Pollutants analysis, Air Pollutants radiation effects, Carbon Disulfide analysis, Carbon Disulfide radiation effects, Electrodes, Photolysis, Air Pollutants chemistry, Carbon Disulfide chemistry, Microwaves
Abstract

The photolysis of simulating carbon disulfide malodorous gas was studied under UV irradiation emitted by microwave electrodeless lamps. Experiments results show that the photolysis of carbon disulfide is determined by the initial concentration, residence time and gas humidity. When air velocity is 0.2 m/s, initial concentration is about 100 mg/m3, and gas humidity is about 40%, the conversion ratio of carbon disulfide can reach to 75% with microwave electrodeless mercury lamp and 50% with microwave electrodeless iodine lamp. The mechanism of carbon disulfide photolysis was further studied. It is concluded that the photolysis of carbon disulfide is probably a collective action of direct photolysis and *OH radical oxidation.

Published
2007

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