| Autor: |
Davide Gatti, Filippo Tamassia, Paolo Laporta, Marco Marangoni, Riccardo Gotti, Mohammad Khaled Shakfa, Elisabetta Cané, Peter G. Schunemann, Aamir Farooq, Marco Lamperti |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). |
| DOI: |
10.1109/cleo/europe-eqec52157.2021.9542519 |
| Popis: |
Bending vibrational modes are responsible for a relevant fraction of molecular absorption spectra in the mid-infrared region at wavelengths beyond 12 μm. To date, the potential of this region for molecular fingerprinting, high-resolution spectroscopy and frequency metrology has been severely hampered by the lack of widely tunable single-mode lasers, with salt-diode lasers almost disappeared, nonlinear laser sources barely delivering optical powers in excess of few hundreds nanowatt [1] and commercial quantum-cascade-lasers (QCLs) hardly emitting beyond 12 μm in cw mode [2] . Recently, direct frequency comb spectroscopy has conquered such region and showed impressive capabilities to acquire ultrabroad high-resolution spectra till 16.7 μm [3] . Nevertheless, spectroscopic data of high metrological quality have not been reported yet, neither spectra with high quality factor in terms of signal-to-noise ratio per spectral point and number of spectral points per spectral feature. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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