Details
| Original language | English |
|---|---|
| Journal | Nanophotonics |
| Early online date | 27 Jan 2025 |
| Publication status | E-pub ahead of print - 27 Jan 2025 |
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.
Keywords
- Brunel harmonics, injection current harmonics, nanostructures, photocurrent harmonics, strong fields, tunnel ionization
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
- Biotechnology
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Engineering(all)
- Electrical and Electronic Engineering
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Nanophotonics, 27.01.2025.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Photocurrent-induced harmonics in nanostructures
AU - Babushkin, Ihar
AU - Husakou, Anton
AU - Shi, Liping
AU - Demircan, Ayhan
AU - Kovacev, Milutin
AU - Morgner, Uwe
N1 - Publisher Copyright: © 2025 the author(s), published by De Gruyter, Berlin/Boston 2025.
PY - 2025/1/27
Y1 - 2025/1/27
N2 - 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.
AB - 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.
KW - Brunel harmonics
KW - injection current harmonics
KW - nanostructures
KW - photocurrent harmonics
KW - strong fields
KW - tunnel ionization
UR - http://www.scopus.com/inward/record.url?scp=85216416372&partnerID=8YFLogxK
U2 - 10.1515/nanoph-2024-0610
DO - 10.1515/nanoph-2024-0610
M3 - Article
AN - SCOPUS:85216416372
JO - Nanophotonics
JF - Nanophotonics
SN - 2192-8606
ER -