论文标题
明亮的，高re的水窗窗口软X射线源是由非线性脉冲自我压缩在反毒剂中空心核纤维中启用的
Bright, high-repetition-rate water window soft X-ray source enabled by nonlinear pulse self-compression in an antiresonant hollow-core fibre
论文作者
论文摘要
明亮，连贯的软X射线（SXR）辐射对于基础研究和生命科学中的各种应用至关重要。到目前为止，该光谱区域中的高光子通量只能由同步基因，游离电子激光器或高阶谐波生成（HHG）源传递，这些源是由具有很高峰值功率的KHz级重复率激光器驱动的。在这里，我们通过提出一个紧凑的实验来建立通向强大且易于使用的SXR源的新型途径，其中非线性脉冲自我压缩到几个周期式方案中与单个氦气填充的抗抗抗抗氧核心纤维（ARHCF）中的相匹配的HHG结合使用。这使得前100 kHz级的重复率，即台式SXR源，可提供与应用程序相关的通量为2.8*10^6 Photons/s/ev，左右300 eV。时间脉冲自我压缩（导致形成必要的强场波形的形成）和压力控制的相匹配的纤维整合将允许紧凑，高重复速率激光技术，包括市售的系统，以驱动简单且具有成本效益的，相干的高速频率SXR源。
Bright, coherent soft X-ray (SXR) radiation is essential to a variety of applications in fundamental research and life sciences. So far, high photon flux in this spectral region can only be delivered by synchrotrons, free electron lasers or high-order harmonic generation (HHG) sources, which are driven by kHz-class repetition rate lasers with very high peak powers. Here, we establish a novel route toward powerful and easy-to-use SXR sources by presenting a compact experiment, in which nonlinear pulse self-compression to the few-cycle regime is combined with phase-matched HHG in a single, helium-filled antiresonant hollow-core fibre (ARHCF). This enables the first 100 kHz-class repetition rate, table-top SXR source, that delivers an application-relevant flux of 2.8*10^6 Photons/s/eV around 300 eV. The fibre-integration of temporal pulse self-compression (leading to the formation of the necessary strong-field waveforms) and pressure controlled phase-matching will allow compact, high repetition rate laser technology, including commercially available systems, to drive simple and cost-effective, coherent high-flux SXR sources.
