Open AccessSpectroscopy processing for the NO measurement based on the room-temperature pulsed quantum cascade laser
Author(s) -
Tang Yuan-Yuan,
Wenqing Liu,
Ruifeng Kan,
Yujun Zhang,
Jianguo Liu,
Zhenyu Xu,
Xiaojian Shu,
Zhang Shuai,
He Ying,
Hui Geng,
Cui Yi-ben
Publication year - 2010
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.59.2364
Subject(s) - spectroscopy , quantum cascade laser , materials science , laser , cascade , absorption spectroscopy , residual , calibration , optics , absorption (acoustics) , analytical chemistry (journal) , detection limit , physics , chemistry , computer science , algorithm , chromatography , quantum mechanics , composite material
The intra-pulse spectroscopy based on room-temperature pulsed quantum cascade(QC) lasers was introduced. With a room-temperature pulsed QC laser centered at 1904 cm-1, the sample NO gas has been detected.The least-squared algorithm of baseline fitting and concentration retrieving method were introduced for the single line spectroscopy detection, and the gas concentration can be calculated with scan integration and the corresponding values from HITRAN04 database by direct-absorption technique, without calibration. The detection limit was obtained by analyzing the residual of the absorption spectroscopy as 34 ×10-6m.