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High density terahertz frequency comb produced by coherent synchrotron radiation

Frequency combs have enabled significant progress in frequency metrology and high-resolution spectroscopy extending the achievable resolution while increasing the signal-to-noise ratio. In its coherent mode, synchrotron radiation is accepted to provide an intense terahertz continuum covering a wide...

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Autores principales: Tammaro, S., Pirali, O., Roy, P., Lampin, J.-F., Ducournau, G., Cuisset, A., Hindle, F., Mouret, G.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Pub. Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4518319/
https://www.ncbi.nlm.nih.gov/pubmed/26190043
http://dx.doi.org/10.1038/ncomms8733
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author Tammaro, S.
Pirali, O.
Roy, P.
Lampin, J.-F.
Ducournau, G.
Cuisset, A.
Hindle, F.
Mouret, G.
author_facet Tammaro, S.
Pirali, O.
Roy, P.
Lampin, J.-F.
Ducournau, G.
Cuisset, A.
Hindle, F.
Mouret, G.
author_sort Tammaro, S.
collection PubMed
description Frequency combs have enabled significant progress in frequency metrology and high-resolution spectroscopy extending the achievable resolution while increasing the signal-to-noise ratio. In its coherent mode, synchrotron radiation is accepted to provide an intense terahertz continuum covering a wide spectral range from about 0.1 to 1 THz. Using a dedicated heterodyne receiver, we reveal the purely discrete nature of this emission. A phase relationship between the light pulses leads to a powerful frequency comb spanning over one decade in frequency. The comb has a mode spacing of 846 kHz, a linewidth of about 200 Hz, a fractional precision of about 2 × 10(−10) and no frequency offset. The unprecedented potential of the comb for high-resolution spectroscopy is demonstrated by the accurate determination of pure rotation transitions of acetonitrile.
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spelling pubmed-45183192015-08-07 High density terahertz frequency comb produced by coherent synchrotron radiation Tammaro, S. Pirali, O. Roy, P. Lampin, J.-F. Ducournau, G. Cuisset, A. Hindle, F. Mouret, G. Nat Commun Article Frequency combs have enabled significant progress in frequency metrology and high-resolution spectroscopy extending the achievable resolution while increasing the signal-to-noise ratio. In its coherent mode, synchrotron radiation is accepted to provide an intense terahertz continuum covering a wide spectral range from about 0.1 to 1 THz. Using a dedicated heterodyne receiver, we reveal the purely discrete nature of this emission. A phase relationship between the light pulses leads to a powerful frequency comb spanning over one decade in frequency. The comb has a mode spacing of 846 kHz, a linewidth of about 200 Hz, a fractional precision of about 2 × 10(−10) and no frequency offset. The unprecedented potential of the comb for high-resolution spectroscopy is demonstrated by the accurate determination of pure rotation transitions of acetonitrile. Nature Pub. Group 2015-07-20 /pmc/articles/PMC4518319/ /pubmed/26190043 http://dx.doi.org/10.1038/ncomms8733 Text en Copyright © 2015, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Tammaro, S.
Pirali, O.
Roy, P.
Lampin, J.-F.
Ducournau, G.
Cuisset, A.
Hindle, F.
Mouret, G.
High density terahertz frequency comb produced by coherent synchrotron radiation
title High density terahertz frequency comb produced by coherent synchrotron radiation
title_full High density terahertz frequency comb produced by coherent synchrotron radiation
title_fullStr High density terahertz frequency comb produced by coherent synchrotron radiation
title_full_unstemmed High density terahertz frequency comb produced by coherent synchrotron radiation
title_short High density terahertz frequency comb produced by coherent synchrotron radiation
title_sort high density terahertz frequency comb produced by coherent synchrotron radiation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4518319/
https://www.ncbi.nlm.nih.gov/pubmed/26190043
http://dx.doi.org/10.1038/ncomms8733
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