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arXiv · 2109.11412

Optimal attosecond pulses generation from oscillating plasma surfaces driven at relativistic intensity

Lin Cheng·Zhixin Fan·Liguang Jiao·Aihua Liu
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Abstract

The creation of attosecond pulses via laser-plasma interaction has been a subject of great scientific interest for more than three decades. This process is investigated by using particle-in-cell simulation with varying the plasma and laser parameters. The steepness of the density gradient at the plasma-vacuum interface is examined to see how this parameter affects the high-order harmonic generations and isolated-attosecond pulse creation. The optimal density gradient lengths $L$ are explored within the relativistic oscillating mirror mechanism. Although the ideal gradient lengths for the full width at half maximum and peak intensity of an isolated-attosecond pulse depend on the driving laser intensity independently, they are both found near $L$=0.2$\lambda$ for high laser intensities.

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Lin Cheng, Zhixin Fan, Liguang Jiao, Aihua Liu. 2021-09-23. Optimal attosecond pulses generation from oscillating plasma surfaces driven at relativistic intensity. https://arxiv.org/abs/2109.11412

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