An ultrafast nanotip electron gun triggered by grating-coupled surface plasmons
| Autor: | Claus Ropers, Reiner Bormann, Murat Sivis, Benjamin Schröder, Sascha Schäfer |
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| Rok vydání: | 2015 |
| Předmět: |
Diffraction
Materials science Physics and Astronomy (miscellaneous) business.industry Astrophysics::High Energy Astrophysical Phenomena Surface plasmon Physics::Optics 02 engineering and technology Electron Grating 021001 nanoscience & nanotechnology 7. Clean energy 01 natural sciences Optics Excited state 0103 physical sciences Physics::Atomic and Molecular Clusters 010306 general physics 0210 nano-technology business Ultrashort pulse Astrophysics::Galaxy Astrophysics Plasmon Electron gun |
| Zdroj: | Applied Physics Letters. 107:231105 |
| ISSN: | 1077-3118 0003-6951 |
| Popis: | We demonstrate multiphoton photoelectron emission from gold nanotips induced by nanofocusing surface plasmons, resonantly excited on the tip shaft by a grating coupler. The tip is integrated into an electron gun assembly, which facilitates control over the spatial emission sites and allows us to disentangle direct grating emission from plasmon-triggered apex emission. The nanoscale source size of this electron gun concept enables highly coherent electron pulses with applications in ultrafast electron imaging and diffraction. |
| Databáze: | OpenAIRE |
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