Toward Attosecond Vortices in Semiconductor Materials
We present theoretical results on the generation of short-wavelength vortex beams in semiconductors through their interaction with an intense Laguerre–Gauss (LG) beam, in the regime where nonperturbative high-order harmonics are generated. Our approach leverages key aspects of the microscopic mechan...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
American Association for the Advancement of Science (AAAS)
2025-01-01
|
| Series: | Ultrafast Science |
| Online Access: | https://spj.science.org/doi/10.34133/ultrafastscience.0100 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | We present theoretical results on the generation of short-wavelength vortex beams in semiconductors through their interaction with an intense Laguerre–Gauss (LG) beam, in the regime where nonperturbative high-order harmonics are generated. Our approach leverages key aspects of the microscopic mechanism for high-order harmonic generation (HHG) in condensed matter, including the incorporation of dephasing time in the semiconductor Bloch equations (SBEs), the integration of the SBE model with the thin-slab model, and the application of experimentally validated scaling laws for different harmonic orders. For our simulations, we use a zinc oxide crystal interacting with an LG vortex beam characterized by a topological charge of [Formula: see text]. Time-domain analysis reveals that this is a feasible route, by synthesizing several harmonics, toward the generation of twisted attosecond pulse trains. These findings contribute to advancing the understanding of solid-state media interacting with structured light. |
|---|---|
| ISSN: | 2765-8791 |