163 citations · 383 across the 12 of their papers we have counts for
12 papers
Influence of molecular rotation on the generation of N air lasing
Wenli Yang, Ping Li, Luzhen Yang +4
N air lasing has attracted considerable attention due to its promising applications in remote sensing and the debates surrounding its generation mechanisms. Here, we present…
Coherent postionization dynamics of molecules based on adiabatic strong-field approximation
Shan Xue, Wenli Yang, Ping Li +5
Taking N2 and O2 as examples, we theoretically study the post-ionization dynamics of molecules in strong laser fields using a density matrix method for open systems, focusing on th…
The clamped intensity of femtosecond laser pulses varying with gas pressure in the presence of external focusing
Quanjun Wang, Yuxuan Zhang, Yue Zheng +4
We perform a theoretical investigation of the clamped laser intensity inside the filament plasma as a function of gas pressure with external focusing. Unlike the clamped intensity…
Backward lasing of singly ionized nitrogen ions pumped by femtosecond laser pulses
Xiang Zhang, Rostyslav Danylo, Zhengquan Fan +6
We report on the observation of backward lasing at 391.4 nm of nitrogen ions pumped by linearly polarized intense femtosecond pulses at 800 nm. The strongly enhanced spectral inten…
Femtosecond two-photon-excited backward lasing of atomic hydrogen in flame
Pengji Ding, Maria Ruchkina, Yi Liu +2
We report on an observation of bi-directional 656 nm lasing action of atomic hydrogen in premixed CH4/air flame induced by resonant femtosecond 205 nm two-photon excitation. In par…
Recollision induced superradiance of ionized nitrogen molecules
Yi Liu, Pengji Ding, Guillaume Lambert +3
We propose a new mechanism to explain the origin of optical gain in the transitions between excited and ground state of the ionized nitrogen molecule following irradiation of neutr…