Two-color Multiphoton Emission from Nanotips
arXiv:1701.01406 · doi:10.1088/1367-2630/aa58bb
Abstract
Two-color multiphoton emission from polycrystalline tungsten nanotips has been demonstrated using two-color laser fields. The two-color photoemission is assisted by a three-photon multicolor quantum channel, which leads to a twofold increase in quantum efficiency. Weak-field control of two-color multiphoton emission was achieved by changing the efficiency of the quantum channel with pulse delay. The result of this study complements two-color tunneling photoemission in strong fields, and has potential applications for nanowire-based photonic devices. Moreover, the demonstrated two-color multiphoton emission may be important for realizing ultrafast spin-polarized electron sources via optically injected spin current.
References in corpus (4)
- Attosecond control of electrons emitted from a nanoscale metal tip
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Cited by in corpus (3)
- Quantum interference visibility spectroscopy in two-color photoemission from tungsten needle tips
- Momentum space separation of quantum path interferences between photons and surface plasmon polaritons in nonlinear photoemission microscopy
- Laser-induced electron emission from Au nanowires: A probe for orthogonal polarizations