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High-harmonic-driven inverse Raman scattering
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DOI：10.1364/OL.419790.png)
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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 Pi(g) -> C-3 Pi(u) second positive system of molecular nitrogen, the eleventh harmonic of a 3.9 mu m, 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. (C) 2021 Optical Society of America
Keyword:
MIDINFRARED PULSES
QUANTUM-THEORY
LIGHT
MICROSCOPY
FILAMENTS
GAIN
AIR
ABSORPTION
RADIATION
CARS
期刊
IF:
3.3
论文数:
4.0W
被引数:
7.6W
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