| Issue |
EPJ Web Conf.
Volume 266, 2022
EOS Annual Meeting (EOSAM 2022)
|
|
|---|---|---|
| Article Number | 08012 | |
| Number of page(s) | 2 | |
| Section | Topical Meeting (TOM) 8- Non-linear and Quantum Optics | |
| DOI | https://doi.org/10.1051/epjconf/202226608012 | |
| Published online | 13 October 2022 | |
https://doi.org/10.1051/epjconf/202226608012
Multi-beam vortex generation induced by the non-linear optical anisotropy of graphene
Grupo de Investigación en Aplicaciones del Láser y Fotónica, Departamento de Física Aplicada, Universidad de Salamanca, E-37008, Salamanca, Spain
* Corresponding author: lplaja@usal.es
Published online: 13 October 2022
We analyse the high harmonic emission from single-layer graphene driven by infrared vector beams. We demonstrate that graphene’s anisotropy offers a privileged scenario to explore non-trivial light spin-orbit couplings, which substantially extends the possibilities for the generation of high-harmonic structured beams currently studied in atomic and molecular targets. In our case, graphene’s crystal symmetry introduces a spin-dependent diffraction pattern that, coupled with the fundamental conservation of the driver’s topological phase, leads to the splitting of the harmonic field in a multi-beam structure, composed of spatially diverging vortices. Our work demonstrates that anisotropic targets are extraordinary tools to sculpt complex structured short-wavelength beams.
© The Authors, published by EDP Sciences
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