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dc.contributor.author | Pike, F. A. | es_ES |
dc.contributor.author | Benoît, A. | es_ES |
dc.contributor.author | MacLachlan, D. G. | es_ES |
dc.contributor.author | Harris, R. J. | es_ES |
dc.contributor.author | Gris-Sánchez, Itandehui | es_ES |
dc.contributor.author | Lee, D. | es_ES |
dc.contributor.author | Birks, T. A. | es_ES |
dc.contributor.author | Thomson, R. R. | es_ES |
dc.date.accessioned | 2021-07-30T03:31:14Z | |
dc.date.available | 2021-07-30T03:31:14Z | |
dc.date.issued | 2020-07-07 | es_ES |
dc.identifier.issn | 0035-8711 | es_ES |
dc.identifier.uri | http://hdl.handle.net/10251/170962 | |
dc.description.abstract | [EN] Recently, we demonstrated how an astrophotonic light reformatting device, based on a multicore fibre photonic lantern and a 3D waveguide component, can be used to efficiently reformat the point spread function of a telescope to a diffraction-limited pseudo-slit. Here, we demonstrate how such a device can also efficiently mitigate modal noise - a potential source of instability in high-resolution multimode fibre-fed spectrographs. To investigate the modal noise performance of the photonic reformatter, we have used it to feed light into a bench-top near-infrared spectrograph (R approximate to 7000, lambda approximate to 1550 nm). One approach to quantifying the modal noise involved the use of broad-band excitation light and a statistical analysis of how the overall measured spectrum was affected by variations in the input coupling conditions. This approach indicated that the photonic reformatter could reduce modal noise by a factor of 6 when compared to a multimode fibre with a similar number of guided modes. Another approach to quantifying themodal noise involved the use of multiple spectrally narrow lines, and an analysis of how the measured barycentres of these lines were affected by variations in the input coupling. Using this approach, the photonic reformatter was observed to suppress modal noise to the level necessary to obtain spectra with stability close to that observed when using a single mode fibre feed. These results demonstrate the potential of using photonic reformatters to enable efficient multimode spectrographs that operate at the diffraction-limit and are free of modal noise, with potential applications including radial velocity measurements of M-dwarfs. | es_ES |
dc.description.sponsorship | This work was funded by the UK Science and Technology Facilities Council (STFC) -STFC grant no. ST/N000625/1, and by the European Union's Horizon 2020 research and innovation program under grant no. 730890 (OPTICON -Optical Infrared Coordination Network for Astronomy). FAP acknowledges support via an Engineering and Physical Sciences Research Council (EPSRC) iCASE studentship part funded by Renishaw. We acknowledge use of RSoft's Photonic Design Suite, Version Synopsys RSoft 2020.03 https://www.synopsys.com/photonic-solutions.html. | es_ES |
dc.language | Inglés | es_ES |
dc.publisher | Oxford University Press | es_ES |
dc.relation.ispartof | Monthly Notices of the Royal Astronomical Society | es_ES |
dc.rights | Reserva de todos los derechos | es_ES |
dc.subject | Instrumentation: Spectrograph | es_ES |
dc.subject | Techniques: Radial velocities | es_ES |
dc.subject | Planets and satellites | es_ES |
dc.subject | Detection | es_ES |
dc.title | Modal noise mitigation for high-precision spectroscopy using a photonic reformatter | es_ES |
dc.type | Artículo | es_ES |
dc.identifier.doi | 10.1093/mnras/staa1950 | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/EC/H2020/730890/EU/Optical Infrared Coordination Network for Astronomy/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/UKRI//ST%2FN000625%2F1/GB/Precision Astronomical Spectrographs using Single-Mode Photonic Technologies/ | es_ES |
dc.rights.accessRights | Abierto | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Instituto Universitario de Telecomunicación y Aplicaciones Multimedia - Institut Universitari de Telecomunicacions i Aplicacions Multimèdia | es_ES |
dc.description.bibliographicCitation | Pike, FA.; Benoît, A.; Maclachlan, DG.; Harris, RJ.; Gris-Sánchez, I.; Lee, D.; Birks, TA.... (2020). Modal noise mitigation for high-precision spectroscopy using a photonic reformatter. Monthly Notices of the Royal Astronomical Society. 497(3):3713-3725. https://doi.org/10.1093/mnras/staa1950 | es_ES |
dc.description.accrualMethod | S | es_ES |
dc.relation.publisherversion | https://doi.org/10.1093/mnras/staa1950 | es_ES |
dc.description.upvformatpinicio | 3713 | es_ES |
dc.description.upvformatpfin | 3725 | es_ES |
dc.type.version | info:eu-repo/semantics/publishedVersion | es_ES |
dc.description.volume | 497 | es_ES |
dc.description.issue | 3 | es_ES |
dc.relation.pasarela | S\433574 | es_ES |
dc.contributor.funder | European Commission | es_ES |
dc.contributor.funder | UK Research and Innovation | es_ES |
dc.contributor.funder | Science and Technology Facilities Council, Reino Unido | es_ES |
dc.contributor.funder | Engineering and Physical Sciences Research Council, Reino Unido | es_ES |
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