High-harmonic-driven inverse Raman scattering
| Autor: | Aleksandr V. Mitrofanov, M. V. Rozhko, Andrei B. Fedotov, Aleksei M. Zheltikov, A. A. Voronin, Dmitry A. Sidorov-Biryukov |
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| Rok vydání: | 2021 |
| Předmět: |
Physics
Antisymmetric relation business.industry Nonlinear optics Resonance 02 engineering and technology Inverse Raman effect 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics 010309 optics symbols.namesake Optics Harmonics 0103 physical sciences Inverse scattering problem symbols Harmonic Atomic physics 0210 nano-technology business Raman scattering |
| Zdroj: | Optics Letters. 46:3219 |
| ISSN: | 1539-4794 0146-9592 |
| Popis: | Spectral analysis of high-order harmonics generated by ultrashort mid-infrared pulses in molecular nitrogen reveals well-resolved signatures of inverse Raman scattering, showing up near the frequencies of prominent vibrational transitions of nitrogen molecules. When tuned on a resonance with the v ′ = 0 → v ′ ′ = 0 pathway within the B 3 Π g → C 3 Π u second positive system of molecular nitrogen, the eleventh harmonic of a 3.9 µm, 80 fs driver is shown to acquire a distinctive antisymmetric spectral profile with red-shifted bright and blue-shifted dark features as indicators of stimulated Raman gain and loss. This high-harmonic setting extends the inverse Raman effect to a vast class of strong-field light–matter interaction scenarios. |
| Databáze: | OpenAIRE |
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