Unlocking synchrotron sources for THz spectroscopy at sub-MHz resolution
T. Hearne
(1)
,
Marie-Hélène Mammez
(2)
,
Dominique Mammez
(2)
,
M.-A. Martin-Drumel
(1)
,
P. Roy
(3)
,
O. Pirali
(1)
,
Sophie Eliet
(4, 5)
,
S Barbieri
(4, 6)
,
Francis Hindle
(2)
,
Gaël Mouret
(2)
,
Jean-Francois Lampin
(4, 6)
1
ISMO -
Institut des Sciences Moléculaires d'Orsay
2 LPCA - Laboratoire de Physico-Chimie de l'Atmosphère
3 SSOLEIL - Synchrotron SOLEIL
4 IEMN - Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520
5 PCMP - IEMN - Plateforme de Caractérisation Multi-Physiques - IEMN
6 PHOTONIQUE THZ - IEMN - Photonique THz - IEMN
2 LPCA - Laboratoire de Physico-Chimie de l'Atmosphère
3 SSOLEIL - Synchrotron SOLEIL
4 IEMN - Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520
5 PCMP - IEMN - Plateforme de Caractérisation Multi-Physiques - IEMN
6 PHOTONIQUE THZ - IEMN - Photonique THz - IEMN
T. Hearne
- Fonction : Auteur
- PersonId : 21846
- IdHAL : thomas-hearne
- ORCID : 0000-0003-2731-0327
M.-A. Martin-Drumel
- Fonction : Auteur
- PersonId : 173359
- IdHAL : martindrumel
- ORCID : 0000-0002-5460-4294
- IdRef : 165560983
Sophie Eliet
- Fonction : Auteur
- PersonId : 738866
- IdHAL : sophie-eliet
- ORCID : 0000-0001-8289-1473
- IdRef : 176761209
S Barbieri
- Fonction : Auteur
- PersonId : 748223
- IdHAL : stefano-barbieri
- ORCID : 0000-0003-4024-8898
- IdRef : 165686669
Francis Hindle
- Fonction : Auteur
- PersonId : 21714
- IdHAL : francis-hindle
- ORCID : 0000-0001-9925-4497
- IdRef : 15136057X
Gaël Mouret
- Fonction : Auteur
- PersonId : 754741
- IdHAL : gael-mouret
- ORCID : 0000-0002-8770-8188
- IdRef : 110545877
Jean-Francois Lampin
- Fonction : Auteur
- PersonId : 742765
- IdHAL : jean-francois-lampin
- ORCID : 0000-0001-8309-8178
- IdRef : 119595680
Résumé
Synchrotron radiation (SR) has proven to be an invaluable contributor to the field of molecular spectroscopy, particularly in the terahertz region (1-10 THz) where its bright and broadband properties are currently unmatched by laboratory sources. However, measurements using SR are currently limited to a resolution of around 30 MHz, due to the limits of Fourier-transform infrared spectroscopy. To push the resolution limit further, we have developed a spectrometer based on heterodyne mixing of SR with a newly available THz molecular laser, which can operate at frequencies ranging from 1 to 5.5 THz. This spectrometer can record at a resolution of 80 kHz, with 5 GHz of bandwidth around each molecular laser frequency, making it the first SR-based instrument capable of sub-MHz, Doppler-limited spectroscopy across this wide range. This allows closely spaced spectral features, such as the effects of internal dynamics and fine angular momentum couplings, to be observed. Furthermore, mixing of the molecular laser with a THz comb is demonstrated, which will enable extremely precise determinations of molecular transition frequencies.
Format du dépôt | Fichier |
---|---|
Type de dépôt | Article dans une revue |
Résumé |
en
Synchrotron radiation (SR) has proven to be an invaluable contributor to the field of molecular spectroscopy, particularly in the terahertz region (1-10 THz) where its bright and broadband properties are currently unmatched by laboratory sources. However, measurements using SR are currently limited to a resolution of around 30 MHz, due to the limits of Fourier-transform infrared spectroscopy. To push the resolution limit further, we have developed a spectrometer based on heterodyne mixing of SR with a newly available THz molecular laser, which can operate at frequencies ranging from 1 to 5.5 THz. This spectrometer can record at a resolution of 80 kHz, with 5 GHz of bandwidth around each molecular laser frequency, making it the first SR-based instrument capable of sub-MHz, Doppler-limited spectroscopy across this wide range. This allows closely spaced spectral features, such as the effects of internal dynamics and fine angular momentum couplings, to be observed. Furthermore, mixing of the molecular laser with a THz comb is demonstrated, which will enable extremely precise determinations of molecular transition frequencies.
|
Titre |
en
Unlocking synchrotron sources for THz spectroscopy at sub-MHz resolution
|
Auteur(s) |
T. Hearne
1
, Marie-Hélène Mammez
2
, Dominique Mammez
2
, M.-A. Martin-Drumel
1
, P. Roy
3
, O. Pirali
1
, Sophie Eliet
4, 5
, S Barbieri
4, 6
, Francis Hindle
2
, Gaël Mouret
2
, Jean-Francois Lampin
4, 6
1
ISMO -
Institut des Sciences Moléculaires d'Orsay
( 1051103 )
- Université Paris-Saclay, 91405 Orsay cedex
- France
2
LPCA -
Laboratoire de Physico-Chimie de l'Atmosphère
( 244361 )
- Maison de la Recherche en Environnement Industriel 2 (MREI2) 189A, Avenue Maurice Schumann, 59140 Dunkerque
- France
3
SSOLEIL -
Synchrotron SOLEIL
( 1744 )
- L'Orme des Merisiers Saint-Aubin - BP 48 91192 GIF-sur-YVETTE CEDEX
- France
4
IEMN -
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520
( 1066983 )
- [Univ. Lille, CNRS, Centrale Lille Institut, Junia, Univ. Polytechnique Hauts-de-France] ––
Laboratoire Central – Cité Scientifique – Avenue Poincaré – CS 60069 – 59652 VILLENEUVE D’ASCQ CEDEX
- France
5
PCMP - IEMN -
Plateforme de Caractérisation Multi-Physiques - IEMN
( 1067502 )
- France
6
PHOTONIQUE THZ - IEMN -
Photonique THz - IEMN
( 1067488 )
- Groupe Photonique THz - IEMN UMR8520 - (Terahertz Photonics)
- France
|
Langue du document |
Anglais
|
Nom de la revue |
|
Vulgarisation |
Non
|
Comité de lecture |
Oui
|
Audience |
Internationale
|
Date de publication |
2022-02-28
|
Volume |
30
|
Numéro |
5
|
Page/Identifiant |
7372-7382
|
Collaboration/Projet |
|
Projet(s) ANR |
|
Financement |
|
Domaine(s) |
|
DOI | 10.1364/OE.448147 |
Origine :
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