论文标题
通过THZ近场连条纹将等离子纳米焦虑
Clocking plasmon nanofocusing by THz near-field streaking
论文作者
论文摘要
我们在纳米焦点中应用Terahertz（THz）近场条纹，以研究锥形纳米纤维轴上的等离子体极性传播。通过评估血浆诱导的光发射的条纹频谱之间的延迟，并测量直接顶点激发，我们获得了平均等离子体基团速度，这与数值模拟一致。等离子诱导的光发射与THZ近场条纹相结合，有助于对局部光电子源进行广泛的控制，以进行时间分辨的成像和衍射。
We apply terahertz (THz) near-field streaking in a nanofocusing geometry to investigate plasmon polariton propagation on the shaft of a conical nanotip. By evaluating the delay between a streaking spectrogram for plasmon-induced photoemission with a measurement for direct apex excitation, we obtain an average plasmon group velocity, which is in agreement with numerical simulations. Combining plasmon-induced photoemission with THz near-field streaking facilitates extensive control over localized photoelectron sources for time-resolved imaging and diffraction.
