Generation of single attosecond relativistic electron bunch from intense laser interaction with a nanosphere

Horný, Vojtěch; Veisz, László

doi:10.1088/1361-6587/ac2996

Cited by 7 publications

(3 citation statements)

References 51 publications

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“…Particle-In-Cell (PIC) simulations were also performed to get further insight into the process. These indicate [4,9] a twostep process. First electrons are removed from the nanotip by the extreme laser fields strength once every half optical cycle perpendicular to the laser propagation direction consecutively in opposite direction.…”

Section: Resultsmentioning

confidence: 81%

Relativistic electron acceleration from nanotips

Veisz

Andres

Bhadoria

et al. 2023

Laser Acceleration of Electrons, Protons, and Ions VII

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Vacuum laser acceleration (VLA) of electrons has been an intense field of research for a long time due to the extremely high (>1 TV/m) accelerating fields. However, it is very challenging to realize and only a few promising experiments have been performed which have demonstrated the principle. Here, we report on the interaction of relativistic intensity (1020 Wcm-2) sub-two optical cycle (<5 fs) laser pulses with nanotips to realize and optimize VLA. Various properties of accelerated electrons (angular distribution, charge, and electron spectrum) are measured with different intensities and carrier envelope phases of the laser pulse. Among others, waveform dependence of the electron propagation direction is observed. Furthermore, comparable or even higher electron energies beyond 10 MeV are detected with lower laser intensity, i.e., longer focusing, than with high intensity. These surprising results are reproduced using particle-in-cell simulations, which indicate a nanophotonics electron emission from the nanotip followed by VLA. In fact, the unexpected observations are a direct proof of the VLA process and provide a way to optimize it towards higher energy, isolated, attosecond electron bunch generation.

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Section: Resultsmentioning

confidence: 81%

Relativistic electron acceleration from nanotips

Veisz

Andres

Bhadoria

et al. 2023

Laser Acceleration of Electrons, Protons, and Ions VII

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“…Significant increase of fast electron generation would be of critical importance to applications in a variety of areas of science and technology. There are many approaches to generate the electron beams from the solids during intense laser-plasma interactions 50 – 60 . From the point of view of the applications, it is educative to compare electron beams from solids at relativistic laser intensity excitation levels with those from laser wakefield acceleration (LWFA) in plasmas 50 .…”

Section: Discussionmentioning

confidence: 99%

Luminous, relativistic, directional electron bunches from an intense laser driven grating plasma

Lad

Mishima

Singh

et al. 2022

Sci Rep

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Bright, energetic, and directional electron bunches are generated through efficient energy transfer of relativistic intense (~ 1019 W/cm2), 30 femtosecond, 800 nm high contrast laser pulses to grating targets (500 lines/mm and 1000 lines/mm), under surface plasmon resonance (SPR) conditions. Bi-directional relativistic electron bunches (at 40° and 150°) are observed exiting from the 500 lines/mm grating target at the SPR conditions. The surface plasmon excited grating target enhances the electron flux and temperature by factor of 6.0 and 3.6, respectively, compared to that of the plane substrate. Particle-in-Cell simulations indicate that fast electrons are emitted in different directions at different stages of the laser interaction, which are related to the resultant surface magnetic field evolution. This study suggests that the SPR mechanism can be used to generate multiple, bright, ultrafast relativistic electron bunches for a variety of applications.

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“…In recent years, there has been mounting interest in the production of electron bunch trains from dense plasmas, in part due to the higher charge densities obtainable at lower energy than for gas-density plasmas [27], and many novel setups have been suggested to produce them [16,[28][29][30][31][32][33][34][35] with some experimental evidence of their existence [27,36,37]. Interest in such electron bunches extends beyond their production.…”

Section: Introductionmentioning

confidence: 99%

Attosecond and nano-Coulomb electron bunches via the Zero Vector Potential mechanism

Timmis,

Paddock,

Ouatu

et al. 2023

Preprint

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The commissioning of multi-petawatt class laser facilities around the world is gathering pace. One of the primary motivations for these investments is the acceleration of high-quality, low-emittance electron bunches. Here we explore the interaction of a high-intensity femtosecond laser pulse with a mass-limited dense target to produce MeV attosecond electron bunches in transmission and confirm with three-dimensional simulation that such bunches have low emittance and nano-Coulomb charge. We then perform a large parameter scan from non-relativistic laser intensities to the laser-QED regime and from the critical plasma density to beyond solid density to demonstrate that the electron bunch energies and the laser pulse energy absorption into the plasma can be quantitatively described via the Zero Vector Potential mechanism. These results have wide-ranging implications for future particle accelerator science and associated technologies.

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Generation of single attosecond relativistic electron bunch from intense laser interaction with a nanosphere

Cited by 7 publications

References 51 publications

Relativistic electron acceleration from nanotips

Relativistic electron acceleration from nanotips

Luminous, relativistic, directional electron bunches from an intense laser driven grating plasma

Attosecond and nano-Coulomb electron bunches via the Zero Vector Potential mechanism

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