Validation of wavelength modulation spectroscopy techniques for oxygen concentration measurement

2014 ◽  
Vol 192 ◽  
pp. 70-76 ◽  
Author(s):  
S. Neethu ◽  
R. Verma ◽  
S.S. Kamble ◽  
J.K. Radhakrishnan ◽  
P.P. Krishnapur ◽  
...  
Keyword(s):  
Oxygen Concentration ◽  
Wavelength Modulation Spectroscopy ◽  
Concentration Measurement ◽  
Wavelength Modulation ◽  
Modulation Spectroscopy

An auto-correction laser photoacoustic spectrometer based on 2f/1f wavelength modulation spectroscopy

The Analyst ◽  
2020 ◽  
Vol 145 (4) ◽  
pp. 1524-1530 ◽  
Author(s):  
Ke Chen ◽  
Shuai Liu ◽  
Liang Mei ◽  
Feng Jin ◽  
Bo Zhang ◽  
...  
Keyword(s):  
Measurement Errors ◽  
Wavelength Modulation Spectroscopy ◽  
Concentration Measurement ◽  
Gas Detection ◽  
Trace Gas ◽  
Wavelength Modulation ◽  
Trace Gas Detection ◽  
Light Power ◽  
Modulation Spectroscopy ◽  
Photoacoustic Spectrometer

An auto-correction laser photoacoustic (PA) spectrometer based on 2f/1f wavelength modulation spectroscopy (WMS) has been proposed and demonstrated for trace gas detection to eliminate concentration measurement errors due to light power variations.

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