scholarly journals Portable broadband photoacoustic spectroscopy for trace gas detection by quantum cascade laser arrays

2020 ◽  
Vol 45 (12) ◽  
pp. 3248 ◽  
Author(s):  
Chien-Sheng Liao ◽  
Romain Blanchard ◽  
Christian Pfluegl ◽  
Masud Azimi ◽  
Fred Huettig ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Photoacoustic Spectroscopy ◽  
Gas Detection ◽  
Trace Gas ◽  
Trace Gas Detection ◽  
Laser Arrays ◽  
Quantum Cascade

Pulsed quantum-cascade laser-based sensor for trace-gas detection of carbonyl sulfide

2004 ◽  
Vol 43 (32) ◽  
pp. 6040 ◽  
Author(s):  
Gerard Wysocki ◽  
Matt McCurdy ◽  
Stephen So ◽  
Damien Weidmann ◽  
Chad Roller ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Carbonyl Sulfide ◽  
Gas Detection ◽  
Trace Gas ◽  
Trace Gas Detection ◽  
Quantum Cascade

High power, widely tunable, mode-hop free, continuous wave external cavity quantum cascade laser for multi-species trace gas detection

2014 ◽  
Vol 105 (26) ◽  
pp. 261907 ◽  
Author(s):  
R. Centeno ◽  
D. Marchenko ◽  
J. Mandon ◽  
S. M. Cristescu ◽  
G. Wulterkens ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
High Power ◽  
Continuous Wave ◽  
External Cavity ◽  
Gas Detection ◽  
Trace Gas ◽  
Trace Gas Detection ◽  
Quantum Cascade

scholarly journals Photoacoustic Spectroscopy with Quantum Cascade Lasers for Trace Gas Detection

Sensors ◽  
2006 ◽  
Vol 6 (10) ◽  
pp. 1411-1419 ◽  
Author(s):  
Angela Elia ◽  
Cinzia Di Franco ◽  
Pietro Lugarà ◽  
Gaetano Scamarcio
Keyword(s):  
Photoacoustic Spectroscopy ◽  
Quantum Cascade Lasers ◽  
Gas Detection ◽  
Trace Gas ◽  
Trace Gas Detection ◽  
Quantum Cascade ◽  
Cascade Lasers

Photoacoustic spectroscopy for trace gas detection with cryogenic and room-temperature continuous-wave quantum cascade lasers

Open Physics ◽  
2010 ◽  
Vol 8 (2) ◽  
Author(s):  
Virginie Zeninari ◽  
Agnès Grossel ◽  
Lilian Joly ◽  
Thomas Decarpenterie ◽  
Bruno Grouiez ◽  
...  
Keyword(s):  
Detection Limit ◽  
Room Temperature ◽  
Quantum Cascade Lasers ◽  
Gas Detection ◽  
Trace Gas ◽  
Atmospheric Gases ◽  
Trace Gas Detection ◽  
Quantum Cascade ◽  
Cascade Lasers

AbstractThe main characteristics that a sensor must possess for trace gas detection and pollution monitoring are high sensitivity, high selectivity and the capability to perform in situ measurements. The photacoustic Helmholtz sensor developed in Reims, used in conjunction with powerful Quantum Cascade Lasers (QCLs), fulfils all these requirements. The best cell response is # 1200 V W−1 cm and the corresponding ultimate sensitivity is j 3.3 × 10−10 W cm−11 Hz−11/2. This efficient sensor is used with mid-infrared QCLs from Alpes Lasers to reach the strong fundamental absorption bands of some atmospheric gases. A first cryogenic QCL emitting at 7.9 μm demonstrates the detection of methane in air with a detection limit of 3 ppb. A detection limit of 20 ppb of NO in air is demonstrated using another cryogenic QCL emitting in the 5.4 μm region. Real in-situ measurements can be achieved only with room-temperature QCLs. A room-temperature QCL emitting in the 7.9 μm region demonstrates the simultaneous detection of methane and nitrous oxide in air (17 and 7 ppb detection limit, respectively). All these reliable measurements allow the estimated detection limit for various atmospheric gases using quantum cascade lasers to be obtained. Each gas absorbing in the infrared may be detected at a detection limit in the ppb or low-ppb range.

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