ArticleNature communications2024
Ultraviolet astronomical spectrograph calibration with laser frequency combs from nanophotonic lithium niobate waveguides.
Article in Nature communications, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Ultraviolet-C to mid-infrared supercontinuum generation in periodically poled lithium tantalate waveguides.Light, science & applications · 2026Article
- Milliwatt-level UV generation using sidewall poled lithium niobate.Nature communications · 2026Article
- Photonics-integrated terahertz transmission lines.Nature communications · 2025Article
- Femtosecond pulse amplification on a chip.Nature communications · 2024Article
- Continuous ultraviolet to blue-green astrocomb.Nature communications · 2024Article
- Cosmology and fundamental physics with the ELT-ANDES spectrograph.Experimental astronomy · 2024Article
Corrections and comments
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Authors and funding
24 authors.
Funding
Abstract
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.
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Registered trials
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