Terahertz Frequency Comb High-Resolution Heterodyne Spectrometer
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arXiv
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| Auteurs principaux: | , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866915044345774080 |
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| author | Hindle, Francis Khabbaz, Alexandra Roucou, Anthony Lampin, Jean-Francois Mouret, Gaël |
| author_facet | Hindle, Francis Khabbaz, Alexandra Roucou, Anthony Lampin, Jean-Francois Mouret, Gaël |
| contents | We demonstrate the advantages of THz frequency combs for high-resolution spectroscopy. This benefits from wide spectral coverage and the exact knowledge of the frequency position of each comb component. Heterodyne detection combined with a fast Fourier spectrometer enables rapid and simultaneous measurement of more than 80 frequency comb modes covering a 7.5 GHz bandwidth. A spectrum is obtained in under 20 minutes yielding a uniform resolution of 70 kHz. This new setup has been validated by recording more than 150 lines of methanol around 723 GHz, and represents a new solution to exploit THz frequency combs for high-resolution spectroscopy. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_01308 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Terahertz Frequency Comb High-Resolution Heterodyne Spectrometer Hindle, Francis Khabbaz, Alexandra Roucou, Anthony Lampin, Jean-Francois Mouret, Gaël Instrumentation and Detectors We demonstrate the advantages of THz frequency combs for high-resolution spectroscopy. This benefits from wide spectral coverage and the exact knowledge of the frequency position of each comb component. Heterodyne detection combined with a fast Fourier spectrometer enables rapid and simultaneous measurement of more than 80 frequency comb modes covering a 7.5 GHz bandwidth. A spectrum is obtained in under 20 minutes yielding a uniform resolution of 70 kHz. This new setup has been validated by recording more than 150 lines of methanol around 723 GHz, and represents a new solution to exploit THz frequency combs for high-resolution spectroscopy. |
| title | Terahertz Frequency Comb High-Resolution Heterodyne Spectrometer |
| topic | Instrumentation and Detectors |
| url | https://arxiv.org/abs/2412.01308 |