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Nanolocalized nonlinear electron photoemission under coherent control.
Mark I Stockman1, Prabath Hewageegana
1Department of Physics, Georgia State University, Atlanta, Georgia 30303, USA.
Nano Letters
|November 10, 2005
Summary
We demonstrate controllable electron photoemission from metal nanostructures using two-photon coherent control. This technique precisely localizes electron emission to nanoscale hot spots, offering predictable control for advanced applications.
Area of Science:
- Quantum optics
- Plasmonics
- Nanotechnology
Background:
- Electron photoemission from metal nanostructures is crucial for various applications.
- Controlling the location and properties of photoemission is a significant challenge.
Purpose of the Study:
- To theoretically demonstrate controllable electron photoemission from metal nanostructures.
- To propose and analyze the use of silver V-shapes as nanoantennas for localized photoemission.
Main Methods:
- Theoretical modeling of two-photon coherent control.
- Simulation of electron photoemission dynamics in nanostructures.
- Analysis of plasmonic field enhancement in silver V-shapes.
Main Results:
- Two-photon coherent control localizes electron photoemission to controllable nanoscale hot spots.
- Silver V-shaped nanoantennas enable deterministic prediction of hot spot positions.
- Quasi-stationary excitation leads to exponentially high contrast in coherent control.
Conclusions:
- Coherent control offers a precise method for manipulating electron emission from nanostructures.
- Tailored nanoantennas like silver V-shapes are promising for deterministic electron emission control.
- This work paves the way for advanced nanoscale electron sources and manipulation techniques.