Report
High-precision methanol spectroscopy with a widely tunable SI-traceable frequency-comb-based mid-infrared QCL
| العنوان: | High-precision methanol spectroscopy with a widely tunable SI-traceable frequency-comb-based mid-infrared QCL |
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| المؤلفون: | R. Santagata, D. Tran, B. Argence, O. Lopez, S. Tokunaga, F. Wiotte, H. Mouhamad, A. Goncharov, M. Abgrall, Y. Le Coq, H. Alvarez-Martinez, R. Le Targat, W. Lee, D. Xu, P. -E. Pottie, B. Darquié, A. Amy-Klein |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | Physics (arXiv), physics.atom-ph (arXiv), physics.ins-det (arXiv), quant-ph (arXiv) |
| الوصف: | There is an increasing demand for precise molecular spectroscopy, in particular in the mid-infrared fingerprint window that hosts a considerable number of vibrational signatures, whether it be for modeling our atmosphere, interpreting astrophysical spectra or testing fundamental physics. We present a high-resolution mid-infrared spectrometer traceable to primary frequency standards. It combines a widely tunable ultra-narrow Quantum Cascade Laser (QCL), an optical frequency comb and a compact multipass cell. The QCL frequency is stabilized onto a comb controlled with a remote near-infrared ultra-stable laser, transferred through a fiber link. The resulting QCL frequency stability is below 10-15 from 0.1 to 10s and its frequency uncertainty of 4x10-14 is given by the remote frequency standards. Continuous tuning over ~400 MHz is reported. We use the apparatus to perform saturated absorption spectroscopy of methanol in the low-pressure multipass cell and demonstrate a statistical uncertainty at the kHz level on transition center frequencies, confirming its potential for driving the next generation technology required for precise spectroscopic measurements. |
| نوع الوثيقة: | report |
| اللغة: | unknown |
| Relation: | https://figshare.com/articles/preprint/High-precision_methanol_spectroscopy_with_a_widely_tunable_SI-traceable_frequency-comb-based_mid-infrared_QCL/24691914 |
| DOI: | 10.48550/arxiv.1907.11310 |
| الاتاحة: | https://doi.org/10.48550/arxiv.1907.11310 https://figshare.com/articles/preprint/High-precision_methanol_spectroscopy_with_a_widely_tunable_SI-traceable_frequency-comb-based_mid-infrared_QCL/24691914 |
| Rights: | CC0 |
| رقم الانضمام: | edsbas.ED8AD2A |
| قاعدة البيانات: | BASE |
| DOI: | 10.48550/arxiv.1907.11310 |
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