A commercial tunable diode laser (TDL) system for on-line remote measurements of automobile emissions

2004 ◽  
Author(s):  
Konradin Weber ◽  
Alexander Ropertz ◽  
Thomas Schwabe ◽  
Christian Fischer ◽  
Gunther van Haren
Keyword(s):  
Diode Laser ◽  
Tunable Diode Laser ◽  
Automobile Emissions ◽  
Remote Measurements ◽  
On Line

Study of on-line monitoring in the escaping ammonia with tunable diode laser absorption spectroscopy

2013 ◽  
Vol 39 (4) ◽  
pp. 297-299
Author(s):  
张增福 ZHANG Zengfu ◽  
邹得宝 ZOU Debao ◽  
陈文亮 CHEN Wenliang ◽  
赵会娟 ZHAO Huijuan ◽  
徐可欣 XU Kexin
Keyword(s):  
Diode Laser ◽  
Absorption Spectroscopy ◽  
Tunable Diode Laser ◽  
Laser Absorption Spectroscopy ◽  
Laser Absorption ◽  
On Line ◽  
Diode Laser Absorption

Oxygen Sensor Based on Tunable Diode Laser Absorption Spectroscopy with a Vertical Cavity Surface-Emitting Laser

2013 ◽  
Vol 760-762 ◽  
pp. 40-44
Author(s):  
Yan Wei Gao ◽  
Yu Jun Zhang ◽  
Dong Chen ◽  
Ying He ◽  
Kun You ◽  
...  
Keyword(s):  
Diode Laser ◽  
Oxygen Concentration ◽  
Tunable Diode Laser ◽  
Cavity Surface ◽  
Laser Absorption ◽  
Vertical Cavity Surface ◽  
On Line ◽  
Surface Emitting Laser ◽  
Vertical Cavity ◽  
Diode Laser Absorption

Oxygen plays a fundamental role in nature and industrial process, the fast on-line oxygen concentration detection is of great significance. Tunable diode laser absorption spectroscopy (TDLAS) is capable high selective, high sensitive, non-intrusive, this technique exploits the diode laser tunable and narrow bandwidth characteristics, by selecting one absorption line of the target gas to avoid interference from other gas and realize oxygen concentration fast on-line detection. In this paper, we use vertical cavity surface-emitting laser (VCSEL) as the light source, adopting the wavelength modulation spectroscopy and the harmonic detection technology to measure the second harmonic signal and realize oxygen concentration fast on-line detection. The detection concentration range between 0.1% to 40% and detection accuracy is 0.1%.

Simultaneous and on-line detection of multiple gas concentration with tunable diode laser absorption spectroscopy

2013 ◽  
Vol 21 (11) ◽  
pp. 2771-2777 ◽  
Author(s):  
张志荣 ZHANG Zhi-rong ◽  
夏滑 XIA Hua ◽  
董凤忠 DONG Feng-zhong ◽  
庞涛 PANG Tao ◽  
吴边 WU Bian
Keyword(s):  
Diode Laser ◽  
Absorption Spectroscopy ◽  
Tunable Diode Laser ◽  
Line Detection ◽  
Laser Absorption Spectroscopy ◽  
Gas Concentration ◽  
Laser Absorption ◽  
On Line ◽  
Diode Laser Absorption
Sign in / Sign up

Export Citation Format

Share Document