Development Of A Mm-wave Ultra-sensitive Spectrometer For The Detection Of Semi-volatile Organic Vapors

Chrayteh, Mhamad

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https://hdl.handle.net/2142/116688 Copy

Description

Title

Development Of A Mm-wave Ultra-sensitive Spectrometer For The Detection Of Semi-volatile Organic Vapors

Author(s)

Chrayteh, Mhamad

Contributor(s)

• Cuisset, Arnaud
• Mouret, Gaël
• Hindle, Francis
• Elmaleh, Coralie
• Simon, Fabien

Issue Date

2022-06-23

Keyword(s)

Instrument/Technique Demonstration

Abstract

Cavity-Enhanced Absorption Spectroscopy (CEAS) and Cavity Ring-Down Spectroscopy (CRDS) are well established for sensitive infrared measurements of gas phase compounds at trace level using their rovibrational signatures. The recent successful development of a THz Fabry-Perot spectrometer shows that the adaptation of such techniques to the THz and submillimeter is possible$^{1}$ by probing rotational transitions of light polar compounds. Here we report on the development of a new millimeter resonator based on a low-loss corrugated waveguide with highly reflective photonic mirrors obtaining a finesse above 3500 around 150 GHz. With an effective path length of one kilometer, a significant sensitivity has been evaluated by the measurement of line intensities as low as 10$^{-26}$\wn/(molecule/cm$^{2}$). This spectrometer will be used to detect semi-volatile organic vapors at trace level which could not be envisaged with a conventional detection technique.$^{2,3}$ $^{1}$Francis Hindle et al. Optica, vol.6, 1449-1454, (2019). $^{2}$ Gaël Mouret et al. IEEE Sensors, vol.11(1), 133-138, (2013). $^{3}$Roucou et al., CHEMPHYSCHEM, 19, 1056-1067, (2018). Acknowledgment: This work received financial support from the French Agence Nationale de la Recherche via funding of the project Millimeter-wave Explosive Taggant vapors Investigations using Spectral taxonomy (METIS) under contract number ANR-20-ASTR-0016-03.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

eng

Handle URL

https://hdl.handle.net/2142/116688

DOI

https://doi.org/10.15278/isms.2022.RJ09

Copyright and License Information

Copyright 2022 held by the authors

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