Cascaded generation of isolated sub-10 attosecond half-cycle pulses
Cascaded generation of isolated sub-10 attosecond half-cycle pulses
复制标题
级联生成隔离式亚 10 阿秒半周期脉冲
DOI：
10.1088/1367-2630/abf612
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发表时间：
2020-10
影响因子：
3.3
通讯作者：
Ma Wenjun
中科院分区：
文献类型：
--
作者：
Shou Yinren;Hu Ronghao;Gong Zheng;Yu Jinqing;Chen Jia Erh;Mourou Gerard;Yan Xueqing;Ma Wenjun
具有半周期电场的亚 10 阿秒脉冲 (AP) 为在原子时标中检测和操纵电子提供了特殊的选择。然而，此类脉冲的可用性仍然具有挑战性。在这里，我们提出了一种基于等离子体中自然发生的级联过程生成隔离的亚 10 阿秒半周期脉冲的方法。首先通过用单周期飞秒脉冲发射中等过密等离子体来产生反向 AP。之后，形成数纳米厚度的电子片，并在静电场的作用下向前加速。然后，该电子片经历由第一级 AP 尾部而不是初始激光脉冲驱动的单极扰动。这样就在传输方向级联产生了半周期的sub-10 AP。二维细胞内粒子模拟表明，级联方案可以产生持续时间为 7.3 阿秒的孤立半周期脉冲。除了单周期驱动脉冲之外，这种方案还可以通过预先用相对论等离子体透镜对脉冲进行整形，利用商用100 TW 25 fs驱动激光器来实现。
Sub-10 attosecond pulses (APs) with half-cycle electric fields provide exceptional options to detect and manipulate electrons in the atomic timescale. However, the availability of such pulses is still challenging. Here, we propose a method to generate isolated sub-10 attosecond half-cycle pulses based on a cascade process naturally happening in plasma. A backward AP is first generated by shooting a moderate overdense plasma with a one-cycle femtosecond pulse. After that, an electron sheet with the thickness of several nanometers is formed and accelerated forward by the electrostatic field. Then this electron sheet goes through unipolar perturbations driven by the tail of the first-stage AP instead of the initial laser pulse. As a result, a half-cycle sub-10 AP is cascadedly produced in the transmission direction. Two-dimensional particle-in-cell simulations indicate that an isolated half-cycle pulse with the duration of 7.3 attoseconds can be generated from the cascaded scheme. Apart from a one-cycle driving pulse, such a scheme also can be realized with a commercial 100 TW 25 fs driving laser by shaping the pulse with a relativistic plasma lens in advance.
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影响因子：
8.6
作者：
I. Thiele;E. Siminos;T. Fulop
通讯作者：
I. Thiele;E. Siminos;T. Fulop
太瓦级光学半周期阿秒脉冲
影响因子：
4.6
作者：
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通讯作者：
Xu Z
影响因子：
8.6
作者：
Naumova, NM;Nees, JA;Mourou, GA
通讯作者：
Mourou, GA
产生 100-TW 单阿秒 X 射线脉冲
影响因子：
10.4
作者：
Xu Xinrong;Zhang Yuxue;Zhang Hua;Lu Haiyang;Zhou Weiming;Zhou Cangtao;Dromey Brendan;Zhu Shaoping;Zepf Mathew;He Xiantu;Qiao Bin
通讯作者：
Qiao Bin
影响因子：
3.6
作者：
Arkhipov, M. V.;Arkhipov, R. M.;Rosanov, N. N.
通讯作者：
Rosanov, N. N.