Stimulated Raman scattering metrology of molecular hydrogen
Abstract Frequency combs have revolutionized optical frequency metrology, allowing one to determine highly accurate transition frequencies of a wealth of molecular species. These progresses have only marginally benefited infrared-inactive transitions, due to their inherently weak cross-sections. Her...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-04-01
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| Series: | Communications Physics |
| Online Access: | https://doi.org/10.1038/s42005-023-01187-z |
| _version_ | 1797845925225299968 |
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| author | Marco Lamperti Lucile Rutkowski Daniele Ronchetti Davide Gatti Riccardo Gotti Giulio Cerullo Franck Thibault Hubert Jóźwiak Szymon Wójtewicz Piotr Masłowski Piotr Wcisło Dario Polli Marco Marangoni |
| author_facet | Marco Lamperti Lucile Rutkowski Daniele Ronchetti Davide Gatti Riccardo Gotti Giulio Cerullo Franck Thibault Hubert Jóźwiak Szymon Wójtewicz Piotr Masłowski Piotr Wcisło Dario Polli Marco Marangoni |
| author_sort | Marco Lamperti |
| collection | DOAJ |
| description | Abstract Frequency combs have revolutionized optical frequency metrology, allowing one to determine highly accurate transition frequencies of a wealth of molecular species. These progresses have only marginally benefited infrared-inactive transitions, due to their inherently weak cross-sections. Here we overcome this limitation by introducing stimulated-Raman-scattering metrology, where a frequency comb is exploited to calibrate the frequency detuning between the pump and Stokes excitation lasers. We apply this approach to the investigation of molecular hydrogen, which is a recognized benchmark for tests of quantum electrodynamics and of theories that describe physics beyond the standard model. Specifically, we measure the transition frequency of the Q(1) fundamental line of H2 around 4155 cm−1 with few parts-per-billion uncertainty, which is comparable to the theoretical benchmark of ab initio calculations and more than a decade better than the experimental state of the art. Our comb-calibrated stimulated Raman scattering spectrometer extends the toolkit of optical frequency metrology as it can be applied, with simple technical changes, to many other infrared-inactive transitions, over a 50-5000 cm−1 range that covers also purely rotational bands. |
| first_indexed | 2024-04-09T17:46:50Z |
| format | Article |
| id | doaj.art-2115a1541d9d47e2b6ba85b870db2924 |
| institution | Directory Open Access Journal |
| issn | 2399-3650 |
| language | English |
| last_indexed | 2024-04-09T17:46:50Z |
| publishDate | 2023-04-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Communications Physics |
| spelling | doaj.art-2115a1541d9d47e2b6ba85b870db29242023-04-16T11:16:32ZengNature PortfolioCommunications Physics2399-36502023-04-01611710.1038/s42005-023-01187-zStimulated Raman scattering metrology of molecular hydrogenMarco Lamperti0Lucile Rutkowski1Daniele Ronchetti2Davide Gatti3Riccardo Gotti4Giulio Cerullo5Franck Thibault6Hubert Jóźwiak7Szymon Wójtewicz8Piotr Masłowski9Piotr Wcisło10Dario Polli11Marco Marangoni12Dipartimento di Fisica - Politecnico di Milano and IFN-CNRUniv Rennes, CNRS, IPR (Institut de Physique de Rennes)-UMR 6251Dipartimento di Fisica - Politecnico di Milano and IFN-CNRDipartimento di Fisica - Politecnico di Milano and IFN-CNRDipartimento di Fisica - Politecnico di Milano and IFN-CNRDipartimento di Fisica - Politecnico di Milano and IFN-CNRUniv Rennes, CNRS, IPR (Institut de Physique de Rennes)-UMR 6251Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus UniversityInstitute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus UniversityInstitute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus UniversityInstitute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus UniversityDipartimento di Fisica - Politecnico di Milano and IFN-CNRDipartimento di Fisica - Politecnico di Milano and IFN-CNRAbstract Frequency combs have revolutionized optical frequency metrology, allowing one to determine highly accurate transition frequencies of a wealth of molecular species. These progresses have only marginally benefited infrared-inactive transitions, due to their inherently weak cross-sections. Here we overcome this limitation by introducing stimulated-Raman-scattering metrology, where a frequency comb is exploited to calibrate the frequency detuning between the pump and Stokes excitation lasers. We apply this approach to the investigation of molecular hydrogen, which is a recognized benchmark for tests of quantum electrodynamics and of theories that describe physics beyond the standard model. Specifically, we measure the transition frequency of the Q(1) fundamental line of H2 around 4155 cm−1 with few parts-per-billion uncertainty, which is comparable to the theoretical benchmark of ab initio calculations and more than a decade better than the experimental state of the art. Our comb-calibrated stimulated Raman scattering spectrometer extends the toolkit of optical frequency metrology as it can be applied, with simple technical changes, to many other infrared-inactive transitions, over a 50-5000 cm−1 range that covers also purely rotational bands.https://doi.org/10.1038/s42005-023-01187-z |
| spellingShingle | Marco Lamperti Lucile Rutkowski Daniele Ronchetti Davide Gatti Riccardo Gotti Giulio Cerullo Franck Thibault Hubert Jóźwiak Szymon Wójtewicz Piotr Masłowski Piotr Wcisło Dario Polli Marco Marangoni Stimulated Raman scattering metrology of molecular hydrogen Communications Physics |
| title | Stimulated Raman scattering metrology of molecular hydrogen |
| title_full | Stimulated Raman scattering metrology of molecular hydrogen |
| title_fullStr | Stimulated Raman scattering metrology of molecular hydrogen |
| title_full_unstemmed | Stimulated Raman scattering metrology of molecular hydrogen |
| title_short | Stimulated Raman scattering metrology of molecular hydrogen |
| title_sort | stimulated raman scattering metrology of molecular hydrogen |
| url | https://doi.org/10.1038/s42005-023-01187-z |
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