论文标题
相对论等离子体镜以1 kHz的重复速率，高谐波产生和相关的电子发射
High-Harmonic Generation and Correlated Electron Emission from Relativistic Plasma Mirrors at 1 kHz Repetition Rate
论文作者
论文摘要
我们报告了第一代XUV光谱从相对论表面高谐波生成（SHHG）上的XUV光谱以kilohertz的重复速率，并用能量电子同时发出。 SHHG光谱和电子角分布是根据实验控制的血浆密度梯度尺度长度$ l_ \ mathrm {g} $的函数测量的，三个越来越短而强烈的驾驶脉冲：24〜fs和$ a_0 = 1.1 $，8〜fs and $ a_0 = 1.6 $和$ a_0 = 1.6 $ y y y $ a _ $ a_0 $ a_0 $ a_0 $ a_0 $ a_0 $。具有基本充电$ e $的$ m_ \ mathrm {e} c/e $标准化的潜在标准化，电子静止质量$ m_ \ mathrm {e} $和真空灯速度$ c $。对于所有驱动器脉冲，我们在[λ/25，λ/5] $中观察到相关的相对论SHHG和电子发射，其最佳梯度比例长度为$ l_ \ mathrm {g} \ action/10 $。
We report evidence for the first generation of XUV spectra from relativistic surface high-harmonic generation (SHHG) on plasma mirrors at a kilohertz repetition rate, emitted simultaneously with energetic electrons. SHHG spectra and electron angular distributions are measured as a function of the experimentally controlled plasma density gradient scale length $L_\mathrm{g}$ for three increasingly short and intense driving pulses: 24~fs and $a_0=1.1$, 8~fs and $a_0=1.6$, and finally 4~fs and $a_0\approx2.1$, where $a_0$ is the peak vector potential normalized by $m_\mathrm{e} c/e$ with the elementary charge $e$, the electron rest mass $m_\mathrm{e}$, and the vacuum light velocity $c$. For all driver pulses, we observe correlated relativistic SHHG and electron emission in the range $L_\mathrm{g}\in[λ/25,λ/5]$, with an optimum gradient scale length of $L_\mathrm{g}\approxλ/10$.
