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arXiv · 1804.08846

Stable attosecond electron bunches from a nanofiber driven by Laguerre-Gaussian lasers

Li-Xiang Hu·Tong-Pu Yu·Zheng-Ming Sheng·Jorge Vieira·De-Bin Zou·Yan Yin·Paul McKenna·Fu-Qiu Shao
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Abstract

Generation of attosecond bunches of energetic electrons offers significant potential from ultrafast physics to novel radiation sources. However, it is still a great challenge to stably produce such electron beams with lasers, since the typical sub-femtosecond electron bunches from laser-plasma interactions either carry low beam charge, or propagate for only several tens of femtoseconds. Here we propose an all-optical scheme for generating dense attosecond electron bunches via the interaction of an intense Laguerre-Gaussian (LG) laser pulse with a nanofiber. The stable bunch train results from the unique field structure of a circularly polarized LG laser pulse, enabling each bunch to be phase-locked and accelerated forward with low divergence, high beam charge and large beam-angular-momentum. This paves the way for wide applications in various fields, e.g., ultrabrilliant attosecond x/$\gamma$-ray emission.

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Li-Xiang Hu, Tong-Pu Yu, Zheng-Ming Sheng, Jorge Vieira, De-Bin Zou, Yan Yin, Paul McKenna, Fu-Qiu Shao. 2018-04-24. Stable attosecond electron bunches from a nanofiber driven by Laguerre-Gaussian lasers. https://arxiv.org/abs/1804.08846

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