Ultraviolet astronomical spectrograph calibration with laser frequency combs from nanophotonic lithium niobate waveguides
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arXiv
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| Natura: | Preprint |
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2023
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| _version_ | 1866913706132111360 |
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| author | Ludwig, Markus Ayhan, Furkan Schmidt, Tobias M. Wildi, Thibault Voumard, Thibault Blum, Roman Ye, Zhichao Lei, Fuchuan Wildi, François Pepe, Francesco Gaafar, Mahmoud A. Obrzud, Ewelina Grassani, Davide Hefti, Olivia Karlen, Sylvain Lecomte, Steve Moreau, François Chazelas, Bruno Sottile, Rico Torres-Company, Victor Brasch, Victor Villanueva, Luis G. Bouchy, François Herr, Tobias |
| author_facet | Ludwig, Markus Ayhan, Furkan Schmidt, Tobias M. Wildi, Thibault Voumard, Thibault Blum, Roman Ye, Zhichao Lei, Fuchuan Wildi, François Pepe, Francesco Gaafar, Mahmoud A. Obrzud, Ewelina Grassani, Davide Hefti, Olivia Karlen, Sylvain Lecomte, Steve Moreau, François Chazelas, Bruno Sottile, Rico Torres-Company, Victor Brasch, Victor Villanueva, Luis G. Bouchy, François Herr, Tobias |
| contents | Astronomical precision spectroscopy underpins searches for life beyond Earth, direct observation of the expanding Universe and constraining the potential variability of physical constants across cosmological scales. Laser frequency combs can provide the critically required accurate and precise calibration to the astronomical spectrographs. For cosmological studies, extending the calibration with such astrocombs to the ultraviolet spectral range is highly desirable, however, strong material dispersion and large spectral separation from the established infrared laser oscillators have made this exceedingly challenging. Here, we demonstrate for the first time astronomical spectrograph calibrations 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 may contribute to unlocking the full potential of next generation ground- and future space-based astronomical instruments. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2306_13609 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Ultraviolet astronomical spectrograph calibration with laser frequency combs from nanophotonic lithium niobate waveguides Ludwig, Markus Ayhan, Furkan Schmidt, Tobias M. Wildi, Thibault Voumard, Thibault Blum, Roman Ye, Zhichao Lei, Fuchuan Wildi, François Pepe, Francesco Gaafar, Mahmoud A. Obrzud, Ewelina Grassani, Davide Hefti, Olivia Karlen, Sylvain Lecomte, Steve Moreau, François Chazelas, Bruno Sottile, Rico Torres-Company, Victor Brasch, Victor Villanueva, Luis G. Bouchy, François Herr, Tobias Optics Instrumentation and Methods for Astrophysics Astronomical precision spectroscopy underpins searches for life beyond Earth, direct observation of the expanding Universe and constraining the potential variability of physical constants across cosmological scales. Laser frequency combs can provide the critically required accurate and precise calibration to the astronomical spectrographs. For cosmological studies, extending the calibration with such astrocombs to the ultraviolet spectral range is highly desirable, however, strong material dispersion and large spectral separation from the established infrared laser oscillators have made this exceedingly challenging. Here, we demonstrate for the first time astronomical spectrograph calibrations 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 may contribute to unlocking the full potential of next generation ground- and future space-based astronomical instruments. |
| title | Ultraviolet astronomical spectrograph calibration with laser frequency combs from nanophotonic lithium niobate waveguides |
| topic | Optics Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2306.13609 |