Journal
PHYSICAL REVIEW A
Volume 90, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.90.042504
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Funding
- National Basic Research Program of China [2011CB808100, 2014CB921300]
- National Natural Science Foundation of China [11127901, 11134010, 11204332, 11304330]
- Shanghai Yang Fan program [14YF1406100]
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We report on experimental and theoretical investigations of dynamic evolution of individual R-branch laser lines from tunnel-ionized nitrogen molecules based on a pump-probe scheme. Our observation shows that the intensities of the R-branch laser lines exhibit rapid oscillations which can be decomposed into periodic oscillations at different frequencies. The oscillations can be attributed to the coupling between the rotational quantum states mediated either by the probe pulses or by the P-branch laser emission from the molecular ions.
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