Ultra-broadband UV/VIS spectroscopy enabled by resonant dispersive wave emission of a frequency comb
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arXiv
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| Auteurs principaux: | , , , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866912102919176192 |
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| author | Kirchner, Adrian Eber, Alexander Fürst, Lukas Hruska, Emily Frosz, Michael H. Tani, Francesco Bernhardt, Birgitta |
| author_facet | Kirchner, Adrian Eber, Alexander Fürst, Lukas Hruska, Emily Frosz, Michael H. Tani, Francesco Bernhardt, Birgitta |
| contents | We introduce a novel ultra-broadband ultraviolet and visible frequency comb light source covering more than 240 THz by resonant dispersive wave emission in a gas-filled hollow-core fiber waveguide. The light source allows tuning from ~340 nm to 465 nm (645 THz to ~885 THz) with conversion efficiencies of 1.5 %. Ultra-broadband absorption spectroscopy is demonstrated by studying nitrogen dioxide, a molecular species of major atmospheric relevance strongly absorbing across the ultraviolet and visible spectral region. We show that the coherence of the 80 MHz ytterbium fiber-based frequency comb seeding the frequency up-conversion process is conserved, paving the way toward further ultra-broadband (dual) comb spectroscopy across the ultraviolet/visible range. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_01513 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Ultra-broadband UV/VIS spectroscopy enabled by resonant dispersive wave emission of a frequency comb Kirchner, Adrian Eber, Alexander Fürst, Lukas Hruska, Emily Frosz, Michael H. Tani, Francesco Bernhardt, Birgitta Optics We introduce a novel ultra-broadband ultraviolet and visible frequency comb light source covering more than 240 THz by resonant dispersive wave emission in a gas-filled hollow-core fiber waveguide. The light source allows tuning from ~340 nm to 465 nm (645 THz to ~885 THz) with conversion efficiencies of 1.5 %. Ultra-broadband absorption spectroscopy is demonstrated by studying nitrogen dioxide, a molecular species of major atmospheric relevance strongly absorbing across the ultraviolet and visible spectral region. We show that the coherence of the 80 MHz ytterbium fiber-based frequency comb seeding the frequency up-conversion process is conserved, paving the way toward further ultra-broadband (dual) comb spectroscopy across the ultraviolet/visible range. |
| title | Ultra-broadband UV/VIS spectroscopy enabled by resonant dispersive wave emission of a frequency comb |
| topic | Optics |
| url | https://arxiv.org/abs/2411.01513 |