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

Published online by Cambridge University Press:  29 April 2016

Harjit Singh Ghotra  and
Niti Kant
Harjit Singh Ghotra
Affiliation:
Department of Physics, Lovely Professional University, G. T. Road, Phagwara-144411, Punjab, India
Niti Kant*
Affiliation:
Department of Physics, Lovely Professional University, G. T. Road, Phagwara-144411, Punjab, India
*
Address correspondence and reprint requests to: N. Kant, Department of Physics, Lovely Professional University, G. T. Road, Phagwara-144411, Punjab, India. E-mail: [email protected]
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Abstract

Electron 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.

Keywords

Electron accelerationHermite–Gaussian laser beamplasmaTEM modes
Type
Research Article
Information
Laser and Particle Beams , Volume 34 , Issue 3 , September 2016 , pp. 385 - 393
Copyright
Copyright © Cambridge University Press 2016 

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