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arXiv 2201.12758physics.optics
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时空耦合控制Laser加速电子

Spatio-Temporal Coupling Controlled Laser for Electron Acceleration

Lu Wang, Uwe Niedermayer, Jingui Ma, Weihao Liu, Dongfang Zhang, Liejia Qian

摘要:

受加速同步困难的限制,如何在非相对论和相对论之间架起一座桥梁,一直是片上介质激光加速器(DLA)面临的一个长期挑战。在这里,我们提出了一个DLA的基础上的时空耦合(STC)控制的激光脉冲,这使得非相对论电子的加速到亚MeV的水平在一个单一的加速结构(啁啾空间光栅)。它通过色散操纵提供驱动激光的高精度时间和空间调谐,从而在大的能量范围内同步加速速度增加的电子。此外,STC方案是一种通用方法,并且可以扩展到其他波长的驱动场,例如太赫兹脉冲。我们的研究结果带来了新的可能性,兆电子伏级便携式电子源和桌面加速实验。

英文摘要:

Limited by the difficulty in acceleration synchronization, it has been a long-term challenge for on-chip dielectric laser-based accelerators (DLA) to bridge the gap between non-relativistic and relativistic regimes. Here, we propose a DLA based on a spatio-temporal coupling (STC) controlled laser pulse, which enables the acceleration of a non-relativistic electron to a sub-MeV level in a single acceleration structure (chirped spatial grating). It provides high precision temporal and spatial tuning of the driving laser via the dispersion manipulation, leading to a synchronous acceleration of the velocity increasing electrons over a large energy range. Additionally, the STC scheme is a general method and can be extended to driving fields of other wavelengths such as terahertz pulses. Our results bring new possibilities to MeV-scale portable electron sources and table-top acceleration experiments.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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