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Subcycle surface electron emission driven by strong-field terahertz waveforms.

ABSTRACT: 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.

SUBMITTER: Li S

PROVIDER: S-EPMC10584819 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature

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Subcycle surface electron emission driven by strong-field terahertz waveforms.

Li Shaoxian S Sharma Ashutosh A Márton Zsuzsanna Z Nugraha Priyo S PS Lombosi Csaba C Ollmann Zoltán Z Márton István I Dombi Péter P Hebling János J Fülöp József A JA

Nature communications 20231018 1

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, ...[more]

PMID: 37852982

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