scholarly journals Direct acceleration of collimated monoenergetic attosecond electron bunches driven by a radially polarized laser pulse

2021 ◽  
Author(s):  
Cao Yue ◽  
Li-Xiang Hu ◽  
Hu Yan-Ting ◽  
Jie Zhao ◽  
Zou Debin ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Electron Bunches ◽  
Radially Polarized

scholarly journals Coupling Effects in Multistage Laser Wake-field Acceleration of Electrons

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Zhan Jin ◽  
Hirotaka Nakamura ◽  
Naveen Pathak ◽  
Yasuo Sakai ◽  
Alexei Zhidkov ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Electron Beams ◽  
High Energy ◽  
Long Distance ◽  
Plasma Cathode ◽  
Particle In Cell ◽  
Wake Field ◽  
Spatial Coupling ◽  
Electron Bunches ◽  
A Charge

AbstractStaging laser wake-field acceleration is considered to be a necessary technique for developing full-optical jitter-free high energy electron accelerators. Splitting of the acceleration length into several technical parts and with independent laser drivers allows not only the generation of stable, reproducible acceleration fields but also overcoming the dephasing length while maintaining an overall high acceleration gradient and a compact footprint. Temporal and spatial coupling of pre-accelerated electron bunches for their injection in the acceleration phase of a successive laser pulse wake field is the key part of the staging laser-driven acceleration. Here, characterization of the coupling is performed with a dense, stable, narrow energy band of <3% and energy-selectable electron beams with a charge of ~1.6 pC and energy of ~10 MeV generated from a laser plasma cathode. Cumulative focusing of electron bunches in a low-density preplasma, exhibiting the Budker–Bennett effect, is shown to result in the efficient injection of electrons, even with a long distance between the injector and the booster in the laser pulse wake. The measured characteristics of electron beams modified by the booster wake field agree well with those obtained by multidimensional particle-in-cell simulations.

Generation of a beam of fast electrons by tightly focusing a radially polarized ultrashort laser pulse

2012 ◽  
Vol 101 (4) ◽  
pp. 041105 ◽  
Author(s):  
S. Payeur ◽  
S. Fourmaux ◽  
B. E. Schmidt ◽  
J. P. MacLean ◽  
C. Tchervenkov ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Ultrashort Laser Pulse ◽  
Fast Electrons ◽  
Radially Polarized ◽  
Ultrashort Laser

scholarly journals Analysis on the longitudinal field strength formed by tightly-focused radially-polarized femtosecond petawatt laser pulse

2018 ◽  
Vol 26 (25) ◽  
pp. 33091 ◽  
Author(s):  
Tae Moon Jeong ◽  
Sergei Bulanov ◽  
Stefan Weber ◽  
Georg Korn
Keyword(s):  
Laser Pulse ◽  
Field Strength ◽  
Longitudinal Field ◽  
Radially Polarized

Interaction of a non-symmetric powerful laser pulse with a plasma

1998 ◽  
Vol 59 (1) ◽  
pp. 57-68 ◽  
Author(s):  
D. P. GARUCHAVA ◽  
I. G. MURUSIDZE ◽  
G. I. SURAMLISHVILI ◽  
N. L. TSINTSADZE ◽  
D. D. TSKHAKAYA
Keyword(s):  
Analytical Solution ◽  
Laser Pulse ◽  
Ion Channel ◽  
Leading Edge ◽  
Point Of View ◽  
Powerful Laser ◽  
Physical Point ◽  
Electron Bunches ◽  
Rear Edge ◽  
Powerful Laser Pulse

The interaction of a powerful non-symmetric laser pulse with a plasma is studied. The non-symmetry is manifested in an abrupt cut-off of the rear edge of the laser pulse compared with its leading edge. At the same time, three qualitatively different regions are distinguished: the leading edge, the rear edge and the region behind the pulse, where it leaves a wake in the form of generated fields. An analytical solution has been found that defines the longitudinal accelerating field at the end of the rear edge. The results of numerical calculations confirm our physical point of view that the non-symmetry of the laser pulse increases the duration of the ion channel behind the front, thereby enhancing the focusing and effective acceleration of electron bunches.

Tight focusing of radially polarized vortex laser pulse

2013 ◽  
Vol 62 (3) ◽  
pp. 31101 ◽  
Author(s):  
Lina Guo ◽  
Zhilie Tang ◽  
Yongbo Wu ◽  
Chongqing Liang
Keyword(s):  
Laser Pulse ◽  
Tight Focusing ◽  
Radially Polarized
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