Li Shaoxian, Sharma Ashutosh, Márton Zsuzsanna, Nugraha Priyo S, Lombosi Csaba, Ollmann Zoltán, Márton István, Dombi Péter, Hebling János, Fülöp József A
Szentágothai Research Centre, University of Pécs, 7624, Pécs, Hungary.
Center for Terahertz Waves and College of Precision Instrument and Optoelectronics Engineering, and the Key Laboratory of Optoelectronics Information and Technology, Ministry of Education, Tianjin University, 300072, Tianjin, China.
Nat Commun. 2023 Oct 18;14(1):6596. doi: 10.1038/s41467-023-42316-0.
The advent of intense terahertz (THz) sources opened a new era when the demonstration of the acceleration and manipulation of free electrons by THz pulses became within reach. THz-field-driven electron emission was predicted to be confined to a single burst due to the single-cycle waveform. Here we demonstrate the confinement of single-cycle THz-waveform-driven electron emission to one of the two half cycles from a solid surface emitter. Either the leading or the trailing half cycle was active, controlled by reversing the field polarity. THz-driven single-burst surface electron emission sources, which do not rely on field-enhancement structures, will impact the development of THz-powered electron acceleration and manipulation devices, all-THz compact electron sources, THz waveguides and telecommunication, THz-field-based measurement techniques and solid-state devices.
强太赫兹（THz）源的出现开启了一个新时代，此时用太赫兹脉冲加速和操控自由电子的演示变得触手可及。由于单周期波形，太赫兹场驱动的电子发射预计会局限于单个脉冲。在这里，我们展示了从固体表面发射体发出的单周期太赫兹波形驱动的电子发射被限制在两个半周期中的一个。通过反转场极性来控制，前沿或后沿半周期均可起作用。不依赖场增强结构的太赫兹驱动单脉冲表面电子发射源，将对太赫兹驱动的电子加速和操控装置、全太赫兹紧凑型电子源、太赫兹波导与通信、基于太赫兹场的测量技术以及固态器件的发展产生影响。
Zotero 插件