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Strong-field photoemission in nanotip near-fields: from quiver to sub-cycle electron dynamics
- Source :
- Applied Physics B. 122
- Publication Year :
- 2016
- Publisher :
- Springer Science and Business Media LLC, 2016.
-
Abstract
- Metallic nanotips exhibit large electric field enhancements over an extremely broad bandwidth spanning from the optical domain down to static fields. They therefore constitute ideal model systems for the investigation of the inherent frequency scalings of highly nonlinear and strong-field phenomena. Here, we present a comprehensive study of strong-field photoemission from individual metallic nanotips. Combining high local fields and variable-wavelength mid-infrared pulses, we investigate electron dynamics governed by the nanoscale confinement of the optical near-field. In particular, we characterize a transition to sub-cycle, field-driven electron acceleration. The experimental findings are corroborated by semiclassical calculations within a two-step model.
- Subjects :
- Quantum optics
Physics
Physics and Astronomy (miscellaneous)
Condensed matter physics
Quiver
General Engineering
General Physics and Astronomy
Strong field
Semiclassical physics
02 engineering and technology
Electron dynamics
021001 nanoscience & nanotechnology
01 natural sciences
Nonlinear system
Electric field
0103 physical sciences
010306 general physics
0210 nano-technology
Nanoscopic scale
Subjects
Details
- ISSN :
- 14320649 and 09462171
- Volume :
- 122
- Database :
- OpenAIRE
- Journal :
- Applied Physics B
- Accession number :
- edsair.doi...........63082a6610f260fc94750efb74779290