Photocurrent-induced harmonics in nanostructures
Mesoscale and Nanoscale Physics
2024-12-20 v1 Optics
Quantum Physics
Abstract
Photocurrent-induced harmonics appear in gases and solids due to tunnel ionization of electrons in strong fields and subsequent acceleration. In contrast to three-step harmonic emission, no return to the parent ions is necessary. Here we show that the same mechanism produces harmonics in metallic nanostructures in strong fields. Furthermore, we demonstrate how strong local field gradient, appearing as a consequence of the field enhancement, affects photocurrent-induced harmonics. This influence can shed light at the state of electron as it appears in the continuum, in particular, to its initial velocity.
Cite
@article{arxiv.2412.14921,
title = {Photocurrent-induced harmonics in nanostructures},
author = {Ihar Babushkin and Anton Husakou and Liping Shi and Ayhan Demircan and Milutin Kovacev and Uwe Morgner},
journal= {arXiv preprint arXiv:2412.14921},
year = {2024}
}