Direct acceleration of an annular attosecond electron slice driven by near-infrared Laguerre–Gaussian laser

C. Jiang; W. P. Wang; S. Weber; H. Dong; Y. X. Leng; R. X. Li; Z. Z. Xu

doi:10.1017/hpl.2021.28

Journals >High Power Laser Science and Engineering >Volume 9 >Issue 3 >Page 03000e44 > Article

High Power Laser Science and Engineering
Vol. 9, Issue 3, 03000e44 (2021)

Direct acceleration of an annular attosecond electron slice driven by near-infrared Laguerre–Gaussian laser

C. Jiang^1、2、3, W. P. Wang^1、*, S. Weber^4、5, H. Dong^1、3, Y. X. Leng^1、2, R. X. Li^1、2, and Z. Z. Xu^1、2

Author Affiliations

¹State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-Intense Laser Science, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai201800, China

²School of Physical Science and Technology, ShanghaiTech University, Shanghai201210, China

³University of Chinese Academy of Sciences, Beijing100049, China

⁴Institute of Physics of the ASCR, ELI-Beamlines Project, 18221Prague, Czech Republic

⁵School of Science, Xi'an Jiaotong University, Xi'an 710049, China

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DOI: 10.1017/hpl.2021.28 Cite this Article Set citation alerts

C. Jiang, W. P. Wang, S. Weber, H. Dong, Y. X. Leng, R. X. Li, Z. Z. Xu. Direct acceleration of an annular attosecond electron slice driven by near-infrared Laguerre–Gaussian laser[J]. High Power Laser Science and Engineering, 2021, 9(3): 03000e44 Copy Citation Text

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Abstract

A new near-infrared direct acceleration mechanism driven by Laguerre–Gaussian laser is proposed to stably accelerate and concentrate electron slice both in longitudinal and transversal directions in vacuum. Three-dimensional simulations show that a 2-μm circularly polarized ${\mathrm{LG}}_p^l$ (p = 0, l = 1, σ_z = -1) laser can directly manipulate attosecond electron slices in additional dimensions (angular directions) and give them annular structures and angular momentums. These annular vortex attosecond electron slices are expected to have some novel applications such as in the collimation of antiprotons in conventional linear accelerators, edge-enhancement electron imaging, structured X-ray generation, and analysis and manipulation of nanomaterials.

Keywords

annular electron slice direct laser acceleration Laguerre–Gaussian lasers near-infrared laser

$$\begin{align}&{\boldsymbol{E}}_{\boldsymbol{\perp}}={E}_0\sqrt{\frac{2p!}{\pi \left(p+l\right)!}}\frac{1}{w(x)}{\left[\frac{r\sqrt{2}}{w(x)}\right]}^l\exp \left[\frac{-{r}^2}{w^2(x)}\right]{L}_p^l\left[\frac{2{r}^2}{w^2(x)}\right]\notag\\&\qquad\times\exp \left( il\phi \right) \mathsf{\exp}\left[\frac{{{i}}{{{k}}}_{\mathsf{0}}{{{r}}}^{2}x}{2\left({\mathit{{x}}}^{2}+{\mathit{{x}}}_{{\rm R}}^{2}\right)}\right]\notag\\&\qquad\times\mathsf{\exp}\left[-\mathit{{i}}\left(2\mathit{{p}}+\mathit{{l}}+\mathsf{1}\right){\mathrm{arctan}}\left(\frac{\mathit{{x}}}{{\mathit{{x}}}_{{\rm R}}}\right)+\mathit{\mathsf{\psi}}\right]\notag\\&\qquad\times\left[{\boldsymbol{e}}_{{{y}}}+\mathsf{\exp}\left(\frac{\mathit{{i}}{\mathit{\mathsf{\pi \sigma}}}_{\mathit{z}}}{2}\right){\boldsymbol{e}}_{{\textit{z}}}\right],\end{align}$$

((1))

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$$\begin{align}{\mathit{{E}}}_{\mathit{{x}}}&=\frac{\mathit{{i}}}{\mathit{{k}}}\left[\left(\frac{\mathit{{z}}}{{\mathit{{r}}}^{2}}-\frac{2\mathit{{z}}}{\mathit{{w}}\left(\mathit{{x}}\right)}+\mathit{{i}{l}}\frac{\mathit{{y}}}{{\mathit{{r}}}^{2}}+\frac{\mathit{{i}{kx}}}{{\mathit{{x}}}^{2}+{\mathit{{x}}}_{{\rm R}}^{2}}\right){\mathit{{E}}}_{\mathit{{z}}}\right.\notag\\&\quad\left.+\left(\frac{\mathit{{y}}}{{\mathit{{r}}}^{2}}-\frac{2\mathit{{y}}}{\mathit{{w}}\left(\mathit{{x}}\right)}-\mathit{{i}{l}}\frac{\mathit{{z}}}{{\mathit{{r}}}^{2}}+\frac{\mathit{{i}{kx}}}{{\mathit{{x}}}^{2}+{\mathit{{x}}}_{{\rm R}}^{2}}\right){\mathit{{E}}}_{\mathit{{y}}}\right].\end{align}$$

((2))