Temporal Structure of Attosecond Pulses from Laser-Driven Coherent Synchrotron Emission
Temporal Structure of Attosecond Pulses from Laser-Driven Coherent Synchrotron Emission
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DOI：
10.1103/physrevlett.116.083901
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发表时间：
2016-02-25
影响因子：
8.6
通讯作者：
Zepf, M.
中科院分区：
文献类型：
--
作者：
Cousens, S.;Reville, B.;Zepf, M.
用粒子模拟方法研究了激光驱动的相干同步辐射通过薄片传输的微观动力学。对于垂直入射相互作用，我们确定了两个不同的电子纳米束的形成，从这两个纳米束发射发生在驱动激光脉冲的每个半周期。这些发射在时间上被130As分开，并在不同的频率范围内占主导地位，这是每个电子纳米冲压的不同特征的直接结果。可以通过光谱过滤来利用这一点，以隔离这些发射，产生持续时间类似于70as的电磁脉冲。
The microscopic dynamics of laser-driven coherent synchrotron emission transmitted through thin foils are investigated using particle-in-cell simulations. For normal incidence interactions, we identify the formation of two distinct electron nanobunches from which emission takes place each half-cycle of the driving laser pulse. These emissions are separated temporally by 130 as and are dominant in different frequency ranges, which is a direct consequence of the distinct characteristics of each electron nanobunch. This may be exploited through spectral filtering to isolate these emissions, generating electromagnetic pulses of duration similar to 70 as.