Vacuum electron acceleration and bunch compression by a flat-top laser beam

2007 ◽  
Vol 78 (9) ◽  
pp. 093103 ◽  
Author(s):  
W. Wang ◽  
P. X. Wang ◽  
Y. K. Ho ◽  
Q. Kong ◽  
Y. Gu ◽  
...  
Keyword(s):  
Laser Beam ◽  
Electron Acceleration ◽  
Bunch Compression

scholarly journals TEM modes influenced electron acceleration by Hermite–Gaussian laser beam in plasma

2016 ◽  
Vol 34 (3) ◽  
pp. 385-393 ◽  
Author(s):  
Harjit Singh Ghotra ◽  
Niti Kant
Keyword(s):  
Laser Beam ◽  
Beam Width ◽  
Electron Acceleration ◽  
Particle Simulation ◽  
Electron Interaction ◽  
Electron Dynamics ◽  
Gaussian Laser Beam ◽  
Trapping Force ◽  
Tem Mode ◽  
Transverse Electromagnetic

AbstractElectron acceleration by a circularly polarized Hermite–Gaussian (HG) laser beam in the plasma has been investigated theoretically for the different transverse electromagnetic (TEM) mode indices (m, n) as (0, 1), (0, 2), (0, 3), and (0, 4). HG laser beam possesses higher trapping force compared with a standard Gaussian beam owing to its propagation characteristics during laser–electron interaction. A single-particle simulation indicates a resonant enhancement in the electron acceleration with HG laser beam. We present the intensity distribution for different TEM modes. We also analyze the dependence of beam width parameter on electron acceleration distance, which effectively influences the electron dynamics. Electron acceleration up to longer distance is observed with the lower modes. However, the higher electron energy gain is observed with higher modes at shorter distance of propagation.

Phase dependence of electron acceleration in a tightly focused laser beam

2005 ◽  
Vol 12 (7) ◽  
pp. 073101 ◽  
Author(s):  
Xinkui He ◽  
R. X. Li ◽  
B. Shuai ◽  
X. C. Ge ◽  
Z. Z. Xu
Keyword(s):  
Laser Beam ◽  
Electron Acceleration ◽  
Phase Dependence

scholarly journals Electric, magnetic Wakefields, and electron acceleration in quantum plasma

2012 ◽  
Vol 30 (2) ◽  
pp. 267-273 ◽  
Author(s):  
P. Kumar ◽  
C. Tewari
Keyword(s):  
Laser Pulse ◽  
Laser Beam ◽  
Quantum Effects ◽  
Electron Acceleration ◽  
Quantum Plasma ◽  
Incident Laser Beam ◽  
Incident Laser ◽  
High Energies ◽  
Test Electron ◽  
Radial Forces

AbstractA detailed study of Wakefield excitation in very dense quantum plasma is presented. Electric and magnetic Wakefields have been obtained for a particular profile of the laser pulse, using perturbative technique involving orders of the incident laser beam. The Wakefields can trap electrons and accelerate them to extremely high energies. It is observed that the quantum effects significantly change the classical nature of the Wakefield. The axial and radial forces acting on a test electron due to the Wakefields have been evaluated.

scholarly journals Direct Electron Acceleration By An Intense Nonparaxial Cosh-Gaussian Laser Beam Driven Electron Plasma Wave in Plasma

2021 ◽  
Author(s):  
Gunjan Purohit ◽  
Bineet Gaur ◽  
Amita Raizada ◽  
Pradeep Kothiyal
Keyword(s):  
Laser Beam ◽  
Plasma Wave ◽  
Electron Acceleration ◽  
Electron Plasma ◽  
Acceleration Process ◽  
Gaussian Laser Beam ◽  
Plasma Parameters ◽  
Electron Plasma Wave ◽  
Self Focusing ◽  
Paraxial Ray

Abstract Excitation of electron plasma wave by an intense short laser pulse is relevant to electron acceleration process in laser plasma interactions. In this work, the self-focusing of an intense cosh-Gaussian laser beam in collissionless plasma have been studied in the non-paraxial region with relativistic and ponderomotive nonlinearities. Further, the effect of self-focusing of the cosh-Gaussian laser beam on the excitation of electron plasma wave and on subsequent electron acceleration has been investigated. Analytical expressions for the beam width parameter/intensity of cosh-Gaussian laser beam and the electron plasma wave have been established and solved numerically. The energy of the accelerated electrons has also been obtained. The strong self-focusing of the cosh-Gaussian laser beam in plasmas stimulates a large amplitude electron plasma wave, which further accelerates the electrons. The well-established laser and plasma parameters have been used in numerical computation. The results have been compared with paraxial ray approximation, Gaussian profile of laser beam and only with the relativistic nonlinearity. Numerical results suggest that the focusing of the cosh-Gaussian laser beam, the amplitude of electron plasma wave, and energy gain by electrons increases in non-paraxial region, when relativistic and ponderomotive nonlinearities are simultaneously operative. In addition, it has also been observed that the electron plasma wave is driven more efficiently by a cosh-Gaussian laser beam that accelerates plasma electrons to higher energies.

Field properties and vacuum electron acceleration in a laser beam of high-order Laguerre–Gaussian mode

2008 ◽  
Vol 281 (15-16) ◽  
pp. 4103-4108 ◽  
Author(s):  
X.P. Zhang ◽  
W. Wang ◽  
Y.J. Xie ◽  
P.X. Wang ◽  
Q. Kong ◽  
...  
Keyword(s):  
Laser Beam ◽  
Electron Acceleration ◽  
High Order ◽  
Gaussian Mode
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