Optimization and control of electron beams from laser wakefield accelerations using asymmetric laser pulses

Optimization and control of electron beam quality in laser wakefield acceleration are explored by using a temporally asymmetric laser pulse of the sharp rising front portion. The temporally asymmetric laser pulse imparts stronger ponderomotive force on the ambient plasma electrons. The stronger pond...

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Bibliographic Details
Published in:Physics of plasmas 2017-10, Vol.24 (10)
Main Authors: Gopal, K., Gupta, D. N.
Format: Article
Language:English
Subjects:
Acceleration
Asymmetry
Electron beams
Electrons
Emittance
Laser beams
Lasers
Optimization
Particle in cell technique
Plasma physics
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Summary:Optimization and control of electron beam quality in laser wakefield acceleration are explored by using a temporally asymmetric laser pulse of the sharp rising front portion. The temporally asymmetric laser pulse imparts stronger ponderomotive force on the ambient plasma electrons. The stronger ponderomotive force associated with the asymmetric pulse significantly affects the injection of electrons into the wakefield and consequently the quality of the injected bunch in terms of injected charge, mean energy, and emittance. Based on particle-in-cell simulations, we report to generate a monoenergetic electron beam with reduced emittance and enhanced charge in laser wakefield acceleration using an asymmetric pulse of duration 30 fs.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.5001849