Multipass relativistic high-order-harmonic generation for intense attosecond pulses
Multipass relativistic high-order-harmonic generation for intense attosecond pulses
复制标题
强阿秒脉冲的多通道相对论高次谐波产生
DOI：
--
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
J. Mikhailova
中科院分区：
文献类型：
--
作者：
M. R. Edwards;J. Mikhailova
我们证明了中等相对论性激光与稠密等离子体相互作用产生的总反射场本身就是高次谐波产生的有效驱动器。因此，入射激光束在固体目标上的两个或更多个连续相互作用的系统可以是优化激光能量到高次谐波的转换的实验上可实现的方法。粒子模拟表明，阿秒脉冲强度可能会增加多达四个数量级的多程系统中，阿秒脉冲串的持续时间减少。我们讨论了高次谐波波形工程增强阿秒脉冲产生的电子轨迹模型，提出了多程系统的行为在一系列参数，和OCHETER可能的路线走向实验实现的两个通过系统。
We demonstrate that the total reflected field produced by the interaction of a moderately relativistic laser with dense plasma is itself an efficient driver of high harmonic generation. A system of two or more successive interactions of an incident laser beam on solid targets may therefore be an experimentally realizable method of optimizing conversion of laser energy to high harmonics. Particle-in-cell simulations suggest that attosecond pulse intensity may be increased by up to four orders of magnitude in a multi-pass system, with decreased duration of the attosecond pulse train. We discuss high-harmonic waveform engineering for enhanced attosecond pulse generation with an electron trajectory model, present the behavior of multi-pass systems over a range of parameters, and offer possible routes towards experimental implementation of a two-pass system.