287 citations · 1.7k across the 59 of their papers we have counts for
12 papers · 1 filter
Near-ionization-threshold emission in atomic gases driven by intense sub-cycle pulses
Wei-Chun Chu, John C. Travers, Philip St. J. Russell
We study theoretically the dipole radiation of a hydrogen atom driven by an intense sub-cycle pulse. The time-dependent Schrödinger equation for the system is solved by ab initio c…
Probing dipole-forbidden autoionizing states by isolated attosecond pulses
Wei-Chun Chu, Toru Morishita, C. D. Lin
We propose a general technique to retrieve the information of dipole-forbidden resonances in the autoionizing region. In the simulation, a helium atom is pumped by an isolated atto…
Signature of multi-channel interference in high-order harmonic generation from N2 driven by intense mid-infrared pulses
Guihua Li, Jinping Yao, Xinhua Xie +10
We investigate the multi-electron dynamics in high-order harmonic generation (HHG) from N2 molecules. Clear spectral minima are observed in the cutoff region at all three mid-infra…
Reconstruction of a Rotational Wavepacket of Inverted Molecular Ions in an Intense Femtosecond Laser Field
Haisu Zhang, Chenrui Jing, Jinping Yao +10
We report on generation of a rotational wavepacket in the ground vibronic state (v = 0) of excited electronic B2Σu+ state of N2+ in a femtosecond laser induced plasma spark. Decodi…
Alignment-dependent fluorescence emission induced by tunnel ionization of carbon dioxide from lower-lying orbitals
Jinping Yao, Guihua Li, Xinyan Jia +13
Study on ionization process of molecules in an intense infrared laser field is of paramount interest in strong-field physics and constitutes the foundation of imaging of molecular…
Absorption and emission of single attosecond light pulses in an autoionizing gaseous medium dressed by a time-delayed control field
Wei-Chun Chu, C. D. Lin
An extreme ultraviolet (EUV) single attosecond pulse passing through a laser-dressed dense gas is studied theoretically. The weak EUV pulse pumps the helium gas from the ground sta…
Satellite lines in the photoionization of ions: The Be isoelectronic sequence
W. -C. Chu, H. -L. Zhou, A. Hibbert +1
Partial photoionization cross sections from the ^1S ground and the ^3P metastable states of the Be isoelectronic series to different final states including a number of satellite (i…
Evolution of overlapping resonances along an isoelectronic sequence
W. -C. Chu, H. -L. Zhou, A. Hibbert +1
Near-threshold resonances have been studied for Be-like ions with a focus on overlapping resonances among Rydberg series converging to different thresholds. The behavior of the ove…
Laser-assisted-autoionization dynamics of helium resonances with single attosecond pulses
Wei-Chun Chu, Song-Feng Zhao, C. D. Lin
The strong coupling between two autoionizing states in helium is studied theoretically with the pump-probe scheme. An isolated 100-as XUV pulse is used to excite helium near the 2s…
Photoabsorption of attosecond XUV light pulses by two strongly laser-coupled autoionizing states
Wei-Chun Chu, C. D. Lin
We study theoretically the photoabsorption spectra of an attosecond XUV pulse by a laserdressed atomic system. A weak XUV excites an autoionizing state which is strongly coupled to…
Ionization Suppression of Diatomic Molecules in Intense Midinfrared Laser Field
Z. Lin, X. Y. Jia, C. Wang +11
Diatomic molecules (e.g., O) in intense laser field exhibit a peculiar suppressed ionization behavior compared to their companion atoms. Several physical models have been propo…
High-brightness switchable multi-wavelength remote laser in air
Jinping Yao, Bin Zeng, Huailiang Xu +7
Remote laser in air based on amplified spontaneous emission (ASE) has produced rather well-collimated coherent beams in both backward and forward propagation directions, opening up…