Title :
Sensitive detection of CO and N2O using a high power CW 4.61 μm DFB-QCL based QEPAS sensor
Author :
Yufei Ma ; Lewicki, R. ; Razeghi, M. ; Xin Yu ; Tittel, Frank K.
Author_Institution :
Nat. Key Lab. of Sci. & Technol. on Tunable Laser, Harbin Inst. of Technol., Harbin, China
Abstract :
A high power CW DFB-QCL based CO and N2O QEPAS sensor demonstrating the MDL of 1.5 ppbv and 23 ppbv, respectively was developed. Continuous monitoring of atmospheric CO and N2O concentration levels were performed.
Keywords :
atmospheric chemistry; carbon compounds; chemical sensors; distributed feedback lasers; measurement by laser beam; nitrogen compounds; optical sensors; photoacoustic spectroscopy; quantum cascade lasers; spectrochemical analysis; CO; N2O; atmospheric CO concentration level; atmospheric N2O concentration level; continuous monitoring; high power CW DFB-QCL based QEPAS sensor; sensitive detection; wavelength 4.61 mum; Atmospheric measurements; Biomedical measurement; Educational institutions; Optical sensors; Quantum cascade lasers; Spectroscopy; Temperature measurement;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2013 Conference on
Conference_Location :
San Jose, CA