1. Parabolic-like nanoantennas fabrication by femtosecond laser pulses for strong-field plasmonics
- Author
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Sergey V. Makarov, D. V. Sinitsyn, Ilya V. Treshin, A. A. Ionin, Wolfgang Husinsky, M. A. Gubko, Chandra S.R. Nathala, Andrey A. Rudenko, Leonid V. Seleznev, and Sergey I. Kudryashov
- Subjects
Electromagnetic field ,Fabrication ,Materials science ,business.industry ,Physics::Optics ,Electron ,Laser ,Pulse (physics) ,law.invention ,Optics ,law ,Femtosecond ,Physics::Atomic and Molecular Clusters ,Optoelectronics ,Irradiation ,business ,Plasmon - Abstract
We have demonstrated for the first time that an array of nanoantennas on an aluminum surface, fabricated using a double-pulse femtosecond laser irradiation scheme, results in a 28-fold enhancement of electron photoemission yield, driven by a third femtosecond laser pulse. The numerical electrodynamic modeling indicates that the electron emission is increased owing to instant local electromagnetic field enhancement near the nanoantenna, contributed by both the tip’s “lightning rod” effect and the focusing effect of the pit as a microreflector in parabolic nanoantenna.
- Published
- 2014
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