Electron acceleration by higher-order cosh-gaussian laser pulses in vacuum

被引：8
作者：
Ghotra H.S. [1 ,2 ]
机构：
[1] Department of Physics, School of Chemical Engineering and Physical Sciences, Lovely Professional University, G. T. Road, Punjab, Phagwara
[2] Central Instrumentation Facility (CIF), Research and Development Cell, Lovely Professional University, G. T. Road, Punjab, Phagwara
来源：
Optik | 2023年 / 286卷
关键词：
Cosh-Gaussian Laser; Decentered parameter; Direct Laser Acceleration; Electron acceleration; Radially polarized laser; SDG Energy;
D O I：
10.1016/j.ijleo.2023.170992
中图分类号：
学科分类号：
摘要：
Higher-order Cosh-Gaussian (ch-G) laser pulse is proposed for effective electron acceleration and energy gain in vacuum. The intensity distribution of ch-G laser is influenced by its higher-order (m) and decentered parameter (b) controlled propagation features. The laser pulse order m= (0,1,2,3) classifies them as Gaussian, ch-G, ch-square-G, and ch-cube-G laser pulses. The flatter the beam profile becomes as the order (m) increases, with the loss of its initial maximum intensity center at a slower rate as m increases, making it suitable for long-distance propagation. The increase in decentered parameter b, changes its properties from Gaussian(b=0) to flat top (b>1) and ring-shaped (b∼2) forms. As a result, it operates well enough to quickly accelerate electrons to exceedingly high energies in a short period of time. The analytic results show that altering the m and b combination leads to a significant rise in electron energy with laser intensity (∼1020W/cm2) of the order of GeV in vacuum. © 2023 Elsevier GmbH
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