| Autor: |
Young-Gyun Jeong, S. Payeur, Luca Razzari, Seung-Heon Lee, Andrea Bertoncini, O-Pil Kwon, Jin-Hong Seok, Andrea Rovere, Carlo Liberale, Riccardo Piccoli, Roberto Morandotti, François Vidal |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Ultrafast Phenomena and Nanophotonics XXV. |
| DOI: |
10.1117/12.2577701 |
| Popis: |
We exploit the strong field enhancement offered by vertical gold nanocones resonating at 1 THz to induce THz field-driven electron emission. The nanocones are fabricated via an advanced 3D printing technique on a photopolymer and are successively gold coated. We demonstrate the clear advantage offered by nanocones featuring a monopolar resonance at THz frequencies with respect to traditional non-resonant tips via numerical modelling, THz far-field characterization, and the analysis of electron-induced argon gas fluorescence. Finally, we show that a further degree of optimization is enabled by tailoring the collective response of the nanocones when arranged in an array geometry. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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