Harnessing Plasmonic Interference for Nanoscale Ultrafast Electron Sources
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arXiv
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| Autores principales: | , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866909223072301056 |
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| author | Kachwala, Alimohammed Rizi, Mansoure Moeini Pierce, Christopher M Filippetto, Daniele Maxson, Jared Karkare, Siddharth |
| author_facet | Kachwala, Alimohammed Rizi, Mansoure Moeini Pierce, Christopher M Filippetto, Daniele Maxson, Jared Karkare, Siddharth |
| contents | In this paper we demonstrate the use of plasmonic focusing in conjunction with non-linear photoemisison to develop geometrically flat nanoscale electron sources with less than 40 pm-rad root mean squared (rms) normalized transverse emittance. Circularly polarized light is incident on a gold Archimedean spiral structure to generate surface-plasmon-polaritons which interfere coherently at the center resulting in a 50 nm rms emisison area. Such a nanostructured flat surface enables simultaneous spatio-temporal confinement of emitted electrons at the nanometer and femtosecond level and can be used as an advanced electron source for high-repetition-rate ultrafast electron diffraction and microscopy experiments as well as next-generation of miniaturized particle accelerators. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_08678 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Harnessing Plasmonic Interference for Nanoscale Ultrafast Electron Sources Kachwala, Alimohammed Rizi, Mansoure Moeini Pierce, Christopher M Filippetto, Daniele Maxson, Jared Karkare, Siddharth Accelerator Physics Optics In this paper we demonstrate the use of plasmonic focusing in conjunction with non-linear photoemisison to develop geometrically flat nanoscale electron sources with less than 40 pm-rad root mean squared (rms) normalized transverse emittance. Circularly polarized light is incident on a gold Archimedean spiral structure to generate surface-plasmon-polaritons which interfere coherently at the center resulting in a 50 nm rms emisison area. Such a nanostructured flat surface enables simultaneous spatio-temporal confinement of emitted electrons at the nanometer and femtosecond level and can be used as an advanced electron source for high-repetition-rate ultrafast electron diffraction and microscopy experiments as well as next-generation of miniaturized particle accelerators. |
| title | Harnessing Plasmonic Interference for Nanoscale Ultrafast Electron Sources |
| topic | Accelerator Physics Optics |
| url | https://arxiv.org/abs/2406.08678 |