Title :
The Highly Sensitive Detection of NO Using FAMOS by a Fully-Diode-Laser-Based UV System
Author :
Shao, Jie ; Wang, Hui ; Zhou, Weidong ; Peng, Baojing ; Ying, Chaofu
Author_Institution :
Inst. of Inf. Opt., Zhejiang Normal Univ., Jinhua, China
Abstract :
A spectrometer for detection of nitric oxide (NO) by Faraday Modulation spectrometry in the sub-ppb range on its overlapped Q22(10.5) and QR12(10.5) electronic transition in X2II(υ"=0)-A2Σ+(υ\´=0) band has been constructed using a commercially available fully-diode-laser-based laser system producing mW powers of ultraviolet light at ~226.6 nm and its analytical performance has been evaluated. It is shown that the system is capable of detecting NO down to 0.34 ppb·m under low pressure conditions (at S/N = 3 for a signal averaging of 5 sec). Also the accuracy of the technique has been assessed at different pressure.
Keywords :
Faraday effect; gas sensors; nitrogen compounds; photodetectors; ultraviolet detectors; ultraviolet spectroscopy; FAMOS; NO; faraday modulation spectrometry; fully-diode-laser-based UV system; highly sensitive detection; nitric oxide detection; overlapped Q22(10.5)-QR12(10.5) electronic transition; time 5 s; Absorption; Diode lasers; Infrared detectors; Interference; Laser transitions; Magnetic fields; Optical modulation; Optical polarization; Power lasers; Spectroscopy;
Conference_Titel :
Bioinformatics and Biomedical Engineering (iCBBE), 2010 4th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-4712-1
Electronic_ISBN :
2151-7614
DOI :
10.1109/ICBBE.2010.5516141
