scholarly journals A Sulfur Hexafluoride Sensor Using Quantum Cascade and CO2 Laser-Based Photoacoustic Spectroscopy

Sensors ◽  
2010 ◽  
Vol 10 (10) ◽  
pp. 9359-9368 ◽  
Author(s):  
Mila Rocha ◽  
Marcelo Sthel ◽  
Guilherme Lima ◽  
Marcelo da Silva ◽  
Delson Schramm ◽  
...  
Keyword(s):  
Co2 Laser ◽  
Photoacoustic Spectroscopy ◽  
Sulfur Hexafluoride ◽  
Quantum Cascade

scholarly journals H2S quartz-enhanced photoacoustic spectroscopy sensor employing a liquid-nitrogen-cooled THz quantum cascade laser operating in pulsed mode

2021 ◽  
Vol 21 ◽  
pp. 100219
Author(s):  
Angelo Sampaolo ◽  
Chenren Yu ◽  
Tingting Wei ◽  
Andrea Zifarelli ◽  
Marilena Giglio ◽  
...  
Keyword(s):  
Liquid Nitrogen ◽  
Quantum Cascade Laser ◽  
Photoacoustic Spectroscopy ◽  
Quantum Cascade ◽  
Pulsed Mode

CO2-laser photoacoustic spectroscopy of deuterated ammonia

1997 ◽  
Vol 38 (6) ◽  
pp. 331-336 ◽  
Author(s):  
Ljubica T. Petkovska ◽  
Šćepan S. Miljanić
Keyword(s):  
Co2 Laser ◽  
Photoacoustic Spectroscopy ◽  
Laser Photoacoustic Spectroscopy

scholarly journals Quantum Cascade Laser-Based Photoacoustic Spectroscopy for Trace Vapor Detection and Molecular Discrimination

Sensors ◽  
2010 ◽  
Vol 10 (3) ◽  
pp. 1986-2002 ◽  
Author(s):  
Ellen Holthoff ◽  
John Bender ◽  
Paul Pellegrino ◽  
Almon Fisher
Keyword(s):  
Quantum Cascade Laser ◽  
Photoacoustic Spectroscopy ◽  
Vapor Detection ◽  
Quantum Cascade

scholarly journals Hydrogen peroxide detection with quartz-enhanced photoacoustic spectroscopy using a distributed-feedback quantum cascade laser

2014 ◽  
Vol 104 (4) ◽  
pp. 041117 ◽  
Author(s):  
Wei Ren ◽  
Wenzhe Jiang ◽  
Nancy P. Sanchez ◽  
Pietro Patimisco ◽  
Vincenzo Spagnolo ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Quantum Cascade Laser ◽  
Photoacoustic Spectroscopy ◽  
Distributed Feedback ◽  
Quantum Cascade ◽  
Hydrogen Peroxide Detection

CO2-laser photoacoustic spectroscopy applied to low-level toxic-vapor monitoring

1986 ◽  
Vol 64 (9) ◽  
pp. 1124-1131 ◽  
Author(s):  
G. L. Loper ◽  
J. A. Gelbwachs ◽  
S. M. Beck
Keyword(s):  
Co2 Laser ◽  
Photoacoustic Spectroscopy ◽  
Ambient Air ◽  
Detection Capability ◽  
Photoacoustic Cell ◽  
Low Concentration ◽  
Low Level ◽  
Laser Photoacoustic Spectroscopy ◽  
Industrial Compounds

A CO2-laser photoacoustic detector is being developed that can detect the hazardous hydrazine-based rocket fuels and selected toxic industrial compounds at concentrations below 100 ppb in the ambient air. This paper reviews our work to develop this detector based on the principles of photoacoustic spectroscopy and classical acoustics. The low parts-per-billion level detection capability of the method to the hydrazines is demonstrated with both acoustically nonresonant and resonant photoacoustic cell designs. A flowing, resonant photoacoustic cell whose interior is coated with tetrafluoroethylene Teflon has been shown to be preferred for detecting highly adsorptive or reactive compounds. Photoacoustic spectroscopy has been demonstrated to be useful in measuring adsorption or reaction losses of low-concentration gases on surfaces.

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