144 citations · 1.2k across the 54 of their papers we have counts for
47 papers · 1 filter
Modeling of bound electron effects in particle-in-cell simulation
Xiangyan An, Min Chen, Zheng-Ming Sheng +1
To include the bound electron effects in particle-in-cell (PIC) simulation, we propose a model in which the response of the dipole components of partially ionized ions to external…
Tail-wave-assisted Positron Acceleration in Nonlinear Laser Plasma Wakefields
Wei-Yuan Liu, Xing-Long Zhu, Min Chen +4
Relativistic laser wakefield acceleration is characterized by an unsurpassed accelerating gradient, which is very suitable for electron acceleration over short distances and could…
Bunched proton acceleration from a laser-irradiated cone target
Xing-Long Zhu, Wei-Yuan Liu, Min Chen +4
Laser-driven ion acceleration is an attractive technique for compact high-energy ion sources. Currently, among various physical and technical issues to be solved, the boost of ion…
Laser structured micro-targets generate MeV electron temperature at W/cm
Angana Mondal, Ratul Sabui, Sheroy Tata +14
Relativistic temperature electrons higher than 0.5 MeV are generated typically with laser intensities of about 10 W/cm. Their generation with high repetition rate lase…
Polarized proton acceleration in ultra-intense laser interaction with near critical density plasmas
X. F. Li, P. Gibbon, A. Hützen +4
The production of polarized proton beams with multi-GeV energies in ultra-intense laser interaction with targets is studied with three-dimensional Particle-In-Cell simulations. A n…
Spin and polarization effects on the nonlinear Breit-Wheeler pair production in laser-plasma interaction
Huai-Hang Song, Wei-Min Wang, Yan-Fei Li +5
The spin effect of electrons/positrons (/) and polarization effect of photons are investigated in the interaction of two counter-propagating linearly polarized 10-PW-…
Trapping and acceleration of spin-polarized positrons from photon splitting in wakefields
Wei-Yuan Liu, Kun Xue, Feng Wan +6
Energetic spin-polarized positrons are extremely demanded for forefront researches, such as collider physics, but making compact positron sources is still very challengin…
Growth, saturation and collapse of laser-driven plasma density gratings
H. H. Ma, S. M. Weng, P. Li +6
The plasma density grating induced by intersecting intense laser pulses can be utilized as an optical compressors, polarizers, waveplates and photonic crystals for the manipulation…
Stimulated Raman scattering in the degenerate regime
Yao Zhao, Suming Weng, Zhengming Sheng +1
Stimulated Raman scattering (SRS) in plasma in the degenerate regime is studied theoretically and numerically. Different from normal SRS with the non-degenerate eigen electrostatic…
Guided propagation of extremely intense lasers in plasma via ion motion
Wei-Min Wang, Zheng-Ming Sheng, Thomas Wilson +2
The upcoming petawatt laser facilities may deliver laser pulses with unprecedented intensity of , which can trigger various nonlinear quantum…
Simultaneous polarization transformation and amplification of multi-petawatt laser pulses in magnetized plasmas
Xiaolong Zheng, Suming Weng, Zhe Zhang +4
With increasing laser peak power, the generation and manipulation of high-power laser pulses becomes a growing challenge for conventional solid-state optics due to their limited da…
Suppression of parametric instabilities in inhomogeneous plasma with multi-frequency light
Yao Zhao, Suming Weng, Zhengming Sheng +1
The development of parametric instabilities in a large scale inhomogeneous plasma with an incident laser beam composed of multiple-frequency components is studied theoretically and…
Coherent Transition Radiation from Relativistic Beam-Foil Interaction in the Terahertz and Optical Range
W. J. Ding, F. Y. Li, S. M. Weng +2
Coherent transition radiation (CTR) from relativistic electron beam interaction with an overdense plasma foil is investigated by making use of two-dimensional particle-in-cell simu…
Absolute instability modes due to rescattering of stimulated Raman scattering in a large nonuniform plasma
Yao Zhao, Zhengming Sheng, Suming Weng +2
Absolute instability modes due to rescattering of SRS in a large nonuniform plasma are studied theoretically and numerically. The backscattered light of convective SRS can be consi…
Collimated GeV attosecond electron-positron bunches from a plasma channel driven by 10 PW lasers
Xing-Long Zhu, Zheng-Ming Sheng, Min Chen +2
High-energy positrons and bright γ-ray sources are unique both for fundamental research and practical applications. However, GeV electron-positron pair jets and γ-ray flashes are s…
Generation of GeV positron and γ-photon beams with controllable angular momentum by intense lasers
Xing-Long Zhu, Tong-Pu Yu, Min Chen +2
Although several laser-plasma-based methods have been proposed for generating energetic electrons, positrons and γ-photons, manipulation of their microstructures is still challengi…
THz pulses over 50 millijoules generated from relativistic picosecond laser-plasma interactions
Guoqian Liao, Hao Liu, Yutong Li +15
Ultrahigh-power terahertz (THz) radiation sources are essential for many applications, such as nonlinear THz physics, THz-wave based compact accelerators, etc. However, until now n…
Stable attosecond electron bunches from a nanofiber driven by Laguerre-Gaussian lasers
Li-Xiang Hu, Tong-Pu Yu, Zheng-Ming Sheng +5
Generation of attosecond bunches of energetic electrons offers significant potential from ultrafast physics to novel radiation sources. However, it is still a great challenge to st…
Ionization injection in a laser wakefield accelerator subject to a transverse magnetic field
Q. Zhao, S. M. Weng, Z. M. Sheng +6
The effect of an external transverse magnetic field on ionization injection of electrons in a laser wakefield accelerator (LWFA) is investigated by theoretical analysis and particl…
Multistage Coupling of Laser-Wakefield Accelerators with Curved Plasma Channel
J. Luo, M. Chen, W. Y. Wu +8
Multistage coupling of laser-wakefield accelerators is essential to overcome laser energy depletion for high-energy applications such as TeV level electron-positron colliders. Curr…
Observation of Terahertz Radiation via the Two-Color Laser Scheme with Uncommon Frequency Ratios
L. -L. Zhang, W. -M. Wang, D. Wu +6
In the widely-studied two-color laser scheme for terahertz (THz) radiation from a gas, the frequency ratio of the two lasers is usually fixed at 1:2. We investigate THz g…
Extreme case of Faraday effect: magnetic splitting of ultrashort laser pulses in plasmas
Suming Weng, Qian Zhao, Zhengming Sheng +7
The Faraday effect, caused by a magnetic-field-induced change in the optical properties, takes place in a vast variety of systems from a single atomic layer of graphenes to huge ga…
Collimated Ultra-Bright Gamma-Rays from a PW-Laser-Driven Wire Wiggler
W. -M. Wang, Z. -M. Sheng, P. Gibbon +3
It is shown by three-dimensional QED particle-in-cell simulation that as a laser pulse of 2.5 PW and 20 fs propagates along a sub-wavelength-wide solid wire, directional synchrotro…
Effective suppression of parametric instabilities with decoupled broadband lasers in plasma
Yao Zhao, Suming Weng, Min Chen +5
A theoretical analysis for the stimulated Raman scattering (SRS) instability driven by two laser beams with certain frequency difference is presented. It is found that strong coupl…