论文标题
Attosend Field排放
Attosecond Field Emission
论文作者
论文摘要
电子的现场发射是科学和技术的重大进展，范围从成像物质的原子级结构到以较高的频率的信号处理。这些应用程序的进步升至其时间分辨率和频率呼吁的最终限制，以限制和探测子段时间尺度上的现场发射。我们使用强烈的亚周期瞬变来诱导电子脉冲的光场发射，从钨纳米杆菌和相同瞬态的弱复制品进行实时探测发射动力学。访问新兴电子脉冲的时间轮廓，包括持续时间$τ$ =（53 as $ \ pm $ 5 AS）和CHIRP，以及纳米级近场的直接探测，在Attosecond Physics和Nanoopics的界面上为研究和应用开放了新的研究前景。
Field-emission of electrons underlies major advances in science and technology, ranging from imaging the atomic-scale structure of matter to signal processing at ever-higher frequencies. The advancement of these applications to their ultimate limits of temporal resolution and frequency calls for techniques that can confine and probe the field emission on the sub-femtosecond time scale. We used intense, sub-cycle transients to induce optical field emission of electron pulses from tungsten nanotips and a weak replica of the same transient to directly probe the emission dynamics in real-time. Access into the temporal profile of the emerging electron pulses, including the duration $τ$ = (53 as $\pm$ 5 as) and chirp, and the direct probing of nanoscale near-fields, open new prospects for research and applications at the interface of attosecond physics and nanooptics.
