15 results found
Liu C, Shen B, Zhang X, et al., 2016, Generation of Gamma-ray Beam with Orbital Angular Momentum in the QED Regime, Physics of Plasmas, Vol: 23, ISSN: 1070-664X
We propose a scheme to generate high-energy gamma-ray photons with an orbital angular momentum(OAM) from laser-plasma interactions by irradiating a circularly polarized Laguerre–Gaussianlaser on a thin plasma target. The spin angular momentum and OAM are first transferred toelectrons from the driving laser, and then the OAM is transferred to the gamma-ray photonsfrom the electrons through quantum radiation. This scheme has been demonstrated by usingthree-dimensional quantum electrodynamics particle-in-cell simulations. The topological charge,chirality, and carrier-envelope phase of the short ultra-intense vortex laser can be revealedaccording to the energy distribution of gamma-ray emission.
Zhang L, Shen B, Zhang X, et al., 2016, Deflection of a Reflected Intense Vortex Laser Beam, Physical Review Letters, Vol: 117, ISSN: 0031-9007
An interesting deflection effect deviating the optical reflection law is revealed in the relativistic regime ofintense vortex laser plasma interaction. When an intense vortex laser obliquely impinges onto an overdenseplasma target, the reflected beam deflects out of the plane of incidence with an experimentally observabledeflection angle. The mechanism is demonstrated by full three-dimensional particle-in-cell simulation aswell as analytical modeling using the Maxwell stress tensor. The deflection results from the rotationalsymmetry breaking of the foil driven by the unsymmetrical shear stress of the vortex beam.The l-dependent shear stress, where l is the topological charge, as an intrinsic characteristic to the vortexbeam, plays an important role as the ponderomotive force in relativistic vortex laser matter interaction.
Zhang X, Shen B, Shi Y, et al., 2016, Intense harmonics generation with customized photon frequency and optical vortex, New Journal of Physics, Vol: 18, ISSN: 1367-2630
Liu C, Shen B, Zhang X, et al., 2015, Generation of Ultra-intense Gamma-ray Train by QED Harmonics, arXiv preprint arXiv:1508.06328
Wang W, Shen B, Zhang X, et al., 2015, Hollow screw-like drill in plasma using an intense Laguerre–Gaussian laser, Scientific reports, Vol: 5
Zhang X, Shen B, Shi Y, et al., 2015, Generation of intense high-order vortex harmonics, Physical review letters, Vol: 114, Pages: 173901-173901
Pei Z, Shen B, Zhang X, et al., 2015, Cascaded radiation pressure acceleration, Physics of Plasmas (1994-present), Vol: 22, Pages: 073113-073113
Wang X, Shen B, Zhang X, et al., 2015, High energy protons generation by two sequential laser pulses, Physics of Plasmas (1994-present), Vol: 22, Pages: 043106-043106
Zhang L, Shen B, Xu J, et al., 2015, High quality electron bunch generation with CO2-laser-plasma interaction, Physics of Plasmas (1994-present), Vol: 22, Pages: 023101-023101
SHI Y, SHEN B, al XZHANGE, 2015, OAM effects in relativistic laser plasma interactions, Science Foundation in China, Vol: 23, Pages: 48-68
Shi Y, Shen B, Zhang L, et al., 2014, Light fan driven by a relativistic laser pulse, Physical review letters, Vol: 112, Pages: 235001-235001
Zhang X, Shen B, Zhang L, et al., 2014, Proton acceleration in underdense plasma by ultraintense Laguerre–Gaussian laser pulse, New Journal of Physics, Vol: 16, Pages: 123051-123051
Shi Y, Shen B, Zhang X, et al., 2013, Ultra-bright, ultra-broadband hard x-ray driven by laser-produced energetic electron beams, Physics of Plasmas (1994-present), Vol: 20, Pages: 093102-093102
Yi L, Shen B, Lotov K, et al., 2013, Scheme for proton-driven plasma-wakefield acceleration of positively charged particles in a hollow plasma channel, Physical Review Special Topics-Accelerators and Beams, Vol: 16, Pages: 071301-071301
Yi L, Shen B, Ji L, et al., 2013, Proton acceleration by plasma wakefield driven by an intense proton beam, Laser Part. Beams, Vol: 31, Pages: 427-438
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