175 citations · 175 across the 4 of their papers we have counts for
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Harmonic-seeded resonant Raman amplification in strong-field ionized nitrogen molecules
Jinping Yao, Wei Chu, Chuanshan Tian +3
Generation of free-space laser-like emissions of high spatiotemporal coherence and narrow bandwidth in atmosphere opens promising opportunities for remote spectroscopic sensing. He…
Generation of elliptically polarized nitrogen-ion laser fields using two-color femtosecond laser pulses
Ziting Li, Bin Zeng, Wei Chu +6
We experimentally investigate generation of molecular nitrogen-ion lasers with two femtosecond laser pulses at different wavelengths. The first pulse serves as the pump which ioniz…
Non-perturbative generation of above-threshold harmonics from pre-excited argon atoms in intense mid-infrared laser fields
Guihua Li, Hongqiang Xie, Ziting Li +4
We experimentally investigate the generation of above-threshold harmonics completely from argon atoms on an excited state using mid-infrared femtosecond laser pulses. The highly no…
Population Redistribution among Multiple Electronic States of Molecular Nitrogen Ions in Strong Laser Fields
Jinping Yao, Shicheng Jiang, Wei Chu +11
We carry out a combined theoretical and experimental investigation on the population distributions in the ground and excited states of tunnel ionized N2 molecules at various driver…
Backward air lasing actions induced by femtosecond laser filamentation: influence of population inversion lifetime
Hongqiang Xie, Guihua Li, Wei chu +5
We experimentally investigate generation of backward 357 nm N2 laser in a gas mixture of N2/Ar using 800-nm femtosecond laser pulses, and examine the involved gain dynamics based o…