scholarly journals Dual-feedback mid-infrared cavity-enhanced absorption spectroscopy for H2CO detection using a radio-frequency electrically-modulated interband cascade laser

2018 ◽  
Vol 26 (12) ◽  
pp. 15436 ◽  
Author(s):  
Qixin He ◽  
Chuantao Zheng ◽  
Minhan Lou ◽  
Weilin Ye ◽  
Yiding Wang ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Absorption Spectroscopy ◽  
Mid Infrared ◽  
Enhanced Absorption ◽  
Cavity Enhanced Absorption Spectroscopy ◽  
Interband Cascade Laser ◽  
Electrically Modulated

scholarly journals Cavity enhanced absorption spectroscopy in the mid-infrared using a supercontinuum source

2017 ◽  
Vol 111 (6) ◽  
pp. 061103 ◽  
Author(s):  
Caroline Amiot ◽  
Antti Aalto ◽  
Piotr Ryczkowski ◽  
Juha Toivonen ◽  
Goëry Genty
Keyword(s):  
Absorption Spectroscopy ◽  
Mid Infrared ◽  
Enhanced Absorption ◽  
Cavity Enhanced Absorption Spectroscopy

Applying CEAS method to UV, VIS, and IR spectroscopy sensors

2011 ◽  
Vol 59 (4) ◽  
pp. 415-418 ◽  
Author(s):  
J. Wojtas ◽  
J. Mikolajczyk ◽  
M. Nowakowski ◽  
B. Rutecka ◽  
R. Medrzycki ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Ir Spectroscopy ◽  
High Precision ◽  
Absorption Spectroscopy ◽  
Mid Infrared ◽  
Measure Concentration ◽  
Enhanced Absorption ◽  
Cavity Enhanced Absorption Spectroscopy ◽  
The Cost ◽  
Detection Of Explosives

Applying CEAS method to UV, VIS, and IR spectroscopy sensorsIn the paper, several applications of Cavity Enhanced Absorption Spectroscopy (CEAS) for trace mater detection are described. NO2sensor was constructed using this technique with blue-violet lasers (395-440 nm). The sensor sensitivity reaches the level of single ppb and it was applied in security portal. For detection of two gases at the same time, two-channel sensor was constructed. Used method allows a significant reduction in the cost of optoelectronic CEAS sensor designed to measure of concentrations of many gases simultaneously. Successful monitoring of N2O and NO in the air requires high precision mid-infrared spectroscopy. The constructed sensors are able to measure concentration at ppb level. These sensors might be used for monitoring of atmospheric purity as well as for detection of explosives.

scholarly journals Simultaneous detection of C<sub>2</sub>H<sub>6</sub>, CH<sub>4</sub>, and <i>δ</i><sup>13</sup>C-CH<sub>4</sub> using optical feedback cavity-enhanced absorption spectroscopy in the mid-infrared region: towards application for dissolved gas measurements

2019 ◽  
Vol 12 (6) ◽  
pp. 3101-3109 ◽  
Author(s):  
Loic Lechevallier ◽  
Roberto Grilli ◽  
Erik Kerstel ◽  
Daniele Romanini ◽  
Jérôme Chappellaz
Keyword(s):  
Absorption Spectroscopy ◽  
Optical Feedback ◽  
Optical Cavity ◽  
Simultaneous Detection ◽  
Infrared Region ◽  
Integration Time ◽  
Enhanced Absorption ◽  
Cavity Enhanced Absorption Spectroscopy ◽  
Interband Cascade Laser ◽  
Gas Measurements

Abstract. Simultaneous measurement of C2H6 and CH4 concentrations, and of the δ13C-CH4 isotope ratio is demonstrated using a cavity-enhanced absorption spectroscopy technique in the mid-IR region. The spectrometer is compact and has been designed for field operation. It relies on optical-feedback-assisted injection of 3.3 µm radiation from an interband cascade laser (ICL) into a V-shaped high-finesse optical cavity. A minimum absorption coefficient of 2.8×10-9 cm−1 is obtained in a single scan (0.1 s) over 0.7 cm−1. Precisions of 3 ppbv, 11 ppbv, and 0.08 ‰ for C2H6, CH4, and δ13C-CH4, respectively, are achieved after 400 s of integration time. Laboratory calibrations and tests of performance are reported here. They show the potential for the spectrometer to be embedded in a sensor probe for in situ measurements in ocean waters, which could have important applications for the understanding of the source and fate of hydrocarbons from the seabed and in the water column.

scholarly journals Simultaneous Detection of C<sub>2</sub>H<sub>6</sub>, CH<sub>4</sub> and δ<sup>13</sup>C-CH<sub>4</sub> Using Optical Feedback Cavity Enhanced Absorption Spectroscopy in the Mid-Infrared Region: Towards Application for Dissolved Gas Measurements

2018 ◽  
Author(s):  
Loic Lechevallier ◽  
Roberto Grilli ◽  
Erik Kerstel ◽  
Daniele Romanini ◽  
Jérôme Chappellaz
Keyword(s):  
Absorption Spectroscopy ◽  
Optical Feedback ◽  
Optical Cavity ◽  
Simultaneous Detection ◽  
Infrared Region ◽  
Integration Time ◽  
Enhanced Absorption ◽  
Cavity Enhanced Absorption Spectroscopy ◽  
Interband Cascade Laser ◽  
Gas Measurements

Abstract. Simultaneous measurement of C2H6 and CH4 concentrations, and of the δ13C-CH4 isotope ratio is demonstrated using a cavity enhanced absorption spectroscopy technique in the mid-IR region. The spectrometer is compact and has been designed for field operation. It relies on optical-feedback assisted injection of 3.3-μm radiation from an Interband Cascade Laser (ICL) into a V-shaped high-finesse optical cavity. A minimum absorption coefficient of 2.8 × 10−9 cm−1 is obtained in a single scan (0.1 s) over 0.7 cm−1. Precisions of 3 ppbv, 11 ppbv, and 0.08 ‰ for C2H6, CH4, and δ13C-CH4, respectively, are achieved after 400 s of integration time. Laboratory calibrations and tests of performance are reported here. They show the potential for the spectrometer to be embedded in a sensor probe for in situ measurements in ocean waters, which could have important applications for the understanding of the source and fate of hydrocarbons from the seabed and in the water column.

Optical feedback cavity-enhanced absorption spectroscopy with a 3.24 μm interband cascade laser

2015 ◽  
Vol 106 (22) ◽  
pp. 221106 ◽  
Author(s):  
K. M. Manfred ◽  
G. A. D. Ritchie ◽  
N. Lang ◽  
J. Röpcke ◽  
J. H. van Helden
Keyword(s):  
Absorption Spectroscopy ◽  
Optical Feedback ◽  
Enhanced Absorption ◽  
Cavity Enhanced Absorption Spectroscopy ◽  
Interband Cascade Laser
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