Enhanced multichannel dual-comb spectroscopy of complex systems
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866917955510468608 |
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| author | Aramyan, R. Tretiak, O. Sahoo, S. S. Budker, D. |
| author_facet | Aramyan, R. Tretiak, O. Sahoo, S. S. Budker, D. |
| contents | A multichannel dual-comb spectroscopy (DCS) approach for high-resolution, broadband spectral measurements is presented, demonstrating its effectiveness in studying complex atomic systems. By implementing a photodetector array, we enhance DCS capabilities, addressing the fundamental trade-off between signal-to-noise ratio (SNR) and spectral coverage. To resolve ambiguities in frequency conversion, we introduced a relative offset in the radio frequency (RF) comb teeth, ensuring accurate spectral reconstruction. As a proof of concept, the absorption spectrum of samarium (Sm) vapor is investigated over a 52nm range, and several previously unreported absorption lines are detected. This is a step toward "Spectroscopy 2.0", enabling massively parallel spectroscopic measurements (including those at >100 T magnetic fields) crucial for atomic physics and fundamental interactions research. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_14126 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Enhanced multichannel dual-comb spectroscopy of complex systems Aramyan, R. Tretiak, O. Sahoo, S. S. Budker, D. Atomic Physics Applied Physics Optics A multichannel dual-comb spectroscopy (DCS) approach for high-resolution, broadband spectral measurements is presented, demonstrating its effectiveness in studying complex atomic systems. By implementing a photodetector array, we enhance DCS capabilities, addressing the fundamental trade-off between signal-to-noise ratio (SNR) and spectral coverage. To resolve ambiguities in frequency conversion, we introduced a relative offset in the radio frequency (RF) comb teeth, ensuring accurate spectral reconstruction. As a proof of concept, the absorption spectrum of samarium (Sm) vapor is investigated over a 52nm range, and several previously unreported absorption lines are detected. This is a step toward "Spectroscopy 2.0", enabling massively parallel spectroscopic measurements (including those at >100 T magnetic fields) crucial for atomic physics and fundamental interactions research. |
| title | Enhanced multichannel dual-comb spectroscopy of complex systems |
| topic | Atomic Physics Applied Physics Optics |
| url | https://arxiv.org/abs/2502.14126 |