Two-color Multiphoton Emission from Nanotips
Quantum Physics
2021-05-18 v1 Mesoscale and Nanoscale Physics
Optics
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.
Keywords
Cite
@article{arxiv.1701.01406,
title = {Two-color Multiphoton Emission from Nanotips},
author = {Wayne Cheng-Wei Huang and Maria Becker and Joshua Beck and Herman Batelaan},
journal= {arXiv preprint arXiv:1701.01406},
year = {2021}
}