University of Illinois Urbana-Champaign

Thz Fabry-perot Spectrometer

Hindle, Francis

Content Files
5524.pdf
TI04_5524.pdf

Permalink

https://hdl.handle.net/2142/111314

Description

Title
Thz Fabry-perot Spectrometer
Author(s)
Hindle, Francis
Contributor(s)
  • Mouret, Gaël
  • Cuisset, Arnaud
  • Bocquet, Robin
  • Pienkina, A.
  • Simon, Fabien
  • Elmaleh, Coralie
Issue Date
2021-06-22
Keyword(s)
Instrument/Technique Demonstration
Date of Ingest
  • 2021-09-24T21:09:30Z
  • 2022-01-21T16:08:47Z
Abstract
The development of Cavity-Enhanced Techniques and Cavity Ring Down Spectroscopy has allowed many sensitive infrared measurements to be undertaken. We have constructed a THz resonator with a high finesse to form the basis of a new instrument for sensitive cavity enhanced THz measurements. The resonator uses a low loss oversized corrugated waveguide and high reflectivity photonic mirrors. An effective path length of one kilometer is obtained for a device that is 50 cm in length. A significant sensitivity improvement has been evaluated at 620 GHz by the measurement of minority isotopologues of OCS\footnote{Francis Hindle, Robin Bocquet, Anastasiia Pienkina, Arnaud Cuisset, and Gaël Mouret, Terahertz gas phase spectroscopy using a high finesse Fabry-Pérot cavity Optica (2019) vol 6, 1449-1454 DOI: 10.1364/OPTICA.6.001449}. The sensitivity achieved has allowed several centrifugal distortion-induced rotational lines of CF$_4$ to be recorded and its tetrahedral splitting to be resolved \footnote{Cuisset A, Hindle F, Mouret G, Bocquet R, Bruckhuisen J, Decker J, Pienkina A, Bray C, Fertein E, Boudon V. Terahertz Rotational Spectroscopy of Greenhouse Gases Using Long Interaction Path-Lengths Applied Sciences (2021) vol 11(3) p 1229. https://doi.org/10.3390/app11031229}.
Publisher
International Symposium on Molecular Spectroscopy
Type of Resource
Text
Genre of Resource
Conference Paper / Presentation
Language
eng
Permalink
http://hdl.handle.net/2142/111314
DOI
10.15278/isms.2021.TI04

Owning Collections

Abstracts & Presentations - 2021 International Symposium on Molecular Spectroscopy PRIMARY