Ultraviolet astronomical spectrograph calibration with laser frequency combs from nanophotonic lithium niobate waveguides
Artikel i vetenskaplig tidskrift, 2024
Astronomical precision spectroscopy underpins searches for life beyond Earth, direct observation of the expanding Universe and constraining the potential variability of physical constants on cosmological scales. Laser frequency combs can provide the required accurate and precise calibration to the astronomical spectrographs. For cosmological studies, extending the calibration with such astrocombs to the ultraviolet spectral range is desirable, however, strong material dispersion and large spectral separation from the established infrared laser oscillators have made this challenging. Here, we demonstrate astronomical spectrograph calibration with an astrocomb in the ultraviolet spectral range below 400 nm. This is accomplished via chip-integrated highly nonlinear photonics in periodically-poled, nano-fabricated lithium niobate waveguides in conjunction with a robust infrared electro-optic comb generator, as well as a chip-integrated microresonator comb. These results demonstrate a viable route towards astronomical precision spectroscopy in the ultraviolet and could contribute to unlock the full potential of next-generation ground-based and future space-based instruments.
Författare
Markus Ludwig
Deutsches Elektronen-Synchrotron (DESY)
Furkan Ayhan
Ecole Polytechnique Federale de Lausanne (EPFL)
Tobias M. Schmidt
Université de Genève
Thibault Wildi
Deutsches Elektronen-Synchrotron (DESY)
Thibault Voumard
Deutsches Elektronen-Synchrotron (DESY)
Roman Blum
Centre Suisse d'Electronique et de Microtechnique SA
Zhichao Ye
Chalmers, Mikroteknologi och nanovetenskap, Fotonik
Fuchuan Lei
Chalmers, Mikroteknologi och nanovetenskap, Fotonik
F. Wildi
Université de Genève
Francesco Pepe
Université de Genève
Mahmoud A. Gaafar
Deutsches Elektronen-Synchrotron (DESY)
Ewelina Obrzud
Centre Suisse d'Electronique et de Microtechnique SA
Davide Grassani
Centre Suisse d'Electronique et de Microtechnique SA
Olivia Hefti
Centre Suisse d'Electronique et de Microtechnique SA
Sylvain Karlen
Centre Suisse d'Electronique et de Microtechnique SA
Steve Lecomte
Centre Suisse d'Electronique et de Microtechnique SA
François Moreau
Observatoire de Haute-Provence
B. Chazelas
Université de Genève
Rico Sottile
Observatoire de Haute-Provence
Victor Torres Company
Chalmers, Mikroteknologi och nanovetenskap, Fotonik
Victor Brasch
Q.ANT GmbH
Luis Guillermo Villanueva
Ecole Polytechnique Federale de Lausanne (EPFL)
F. Bouchy
Université de Genève
Tobias Herr
Universität Hamburg
Deutsches Elektronen-Synchrotron (DESY)
Nature Communications
2041-1723 (ISSN) 20411723 (eISSN)
Vol. 15 1 7614Dark-Soliton Engineering in Microresonator Frequency Combs (DarkComb)
Europeiska kommissionen (EU) (EC/H2020/771410), 2018-05-01 -- 2023-04-30.
Ämneskategorier
Astronomi, astrofysik och kosmologi
Atom- och molekylfysik och optik
DOI
10.1038/s41467-024-51560-x
PubMed
39223131