Cavity assisted high-resolution THz spectrometer
Document type :
Compte-rendu et recension critique d'ouvrage
Title :
Cavity assisted high-resolution THz spectrometer
Author(s) :
Simon, Fabien [Auteur]
Laboratoire de Physico-Chimie de l'Atmosphère [LPCA]
Elmaleh, Coralie [Auteur]
Laboratoire de Physico-Chimie de l'Atmosphère [LPCA]
Decker, Jean [Auteur]
Laboratoire de Physico-Chimie de l'Atmosphère [LPCA]
Fourmentin, Marc [Auteur]
Laboratoire de Physico-Chimie de l'Atmosphère [LPCA]
Cuisset, A. [Auteur]
Laboratoire de Physico-Chimie de l'Atmosphère [LPCA]
Ducournau, Guillaume [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Photonique THz - IEMN [PHOTONIQUE THZ - IEMN]
Lampin, Jean-Francois [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Photonique THz - IEMN [PHOTONIQUE THZ - IEMN]
Mouret, Gaël [Auteur]
Laboratoire de Physico-Chimie de l'Atmosphère [LPCA]
Hindle, Francis [Auteur]
Laboratoire de Physico-Chimie de l'Atmosphère [LPCA]
Laboratoire de Physico-Chimie de l'Atmosphère [LPCA]
Elmaleh, Coralie [Auteur]
Laboratoire de Physico-Chimie de l'Atmosphère [LPCA]
Decker, Jean [Auteur]
Laboratoire de Physico-Chimie de l'Atmosphère [LPCA]
Fourmentin, Marc [Auteur]
Laboratoire de Physico-Chimie de l'Atmosphère [LPCA]
Cuisset, A. [Auteur]
Laboratoire de Physico-Chimie de l'Atmosphère [LPCA]
Ducournau, Guillaume [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Photonique THz - IEMN [PHOTONIQUE THZ - IEMN]
Lampin, Jean-Francois [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Photonique THz - IEMN [PHOTONIQUE THZ - IEMN]
Mouret, Gaël [Auteur]
Laboratoire de Physico-Chimie de l'Atmosphère [LPCA]
Hindle, Francis [Auteur]
Laboratoire de Physico-Chimie de l'Atmosphère [LPCA]
Journal title :
Photonics and Nanostructures - Fundamentals and Applications
Pages :
101227
Publisher :
Elsevier
Publication date :
2024-02
ISSN :
1569-4410
English keyword(s) :
Terahertz spectroscopy
Cavity enhanced absorption spectroscopy
Cavity ring-down spectroscopy
Trace gas detection
Atmospheric propagation losses
Cavity enhanced absorption spectroscopy
Cavity ring-down spectroscopy
Trace gas detection
Atmospheric propagation losses
HAL domain(s) :
Sciences de l'ingénieur [physics]/Optique / photonique
English abstract : [en]
The analysis of gases by THz radiation offers a high degree of discrimination due to the narrow linewidths that are observed at low pressure. The sensitivity of existing high-resolution instruments is limited by the ...
Show more >The analysis of gases by THz radiation offers a high degree of discrimination due to the narrow linewidths that are observed at low pressure. The sensitivity of existing high-resolution instruments is limited by the availability and performance of critical system components. This study uses two key components with physical structures at the wavelength scale to realise a high finesse THz cavity. The cavity is characterised and incorporated into a spectrometer. Sensitivity limits of the instrument are experimentally demonstrated for trace and pure gases. Both CEAS (Cavity Enhanced Absorption Spectroscopy) and CRDS (Cavity Ring-Down Spectroscopy) configurations are shown to give sub-ppm detection levels. The cavity has also been used to measure the atmospheric losses.Show less >
Show more >The analysis of gases by THz radiation offers a high degree of discrimination due to the narrow linewidths that are observed at low pressure. The sensitivity of existing high-resolution instruments is limited by the availability and performance of critical system components. This study uses two key components with physical structures at the wavelength scale to realise a high finesse THz cavity. The cavity is characterised and incorporated into a spectrometer. Sensitivity limits of the instrument are experimentally demonstrated for trace and pure gases. Both CEAS (Cavity Enhanced Absorption Spectroscopy) and CRDS (Cavity Ring-Down Spectroscopy) configurations are shown to give sub-ppm detection levels. The cavity has also been used to measure the atmospheric losses.Show less >
Language :
Anglais
Popular science :
Non
ANR Project :
Source :
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