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Título
Extreme-ultraviolet vector-vortex beams from high harmonic generation
Autor(es)
Materia
Azimuthally polarized beams
Beam structure
Light beams
Light matter interactions
Light properties
Vector beams
Fecha de publicación
2022-01
Citación
Heras, A., Pandey, A.K.A, San Román, J., Serrano, J., Baynard, E., Dovillaire, G., Pittman, M., Durfee, C.G., Plaja, L., Kazamias, S., Guilbaud, O. and Hernández-García, C. (2022). Extreme-ultraviolet vector-vortex beams from high harmonic generation. Optica 9, 71-79
Resumen
[EN]Structured light in the short-wavelength regime opens exciting avenues for the study of ultrafast spin and electronic dynamics. Here, we demonstrate theoretically and experimentally the generation of vector-vortex beams (VVB) in the extreme ultraviolet through high-order harmonic generation (HHG). The up-conversion of VVB, which are spatially tailored in their spin and orbital angular momentum, is ruled by the conservation of the topological Pancharatnam charge in HHG. Despite the complex propagation of the driving beam, high-harmonic VVB are robustly generated with smooth propagation properties. Remarkably, we find out that the conversion efficiency of high-harmonic VVB increases with the driving topological charge. Our work opens the possibility to synthesize attosecond helical structures with spatially varying polarization, a unique tool to probe spatiotemporal dynamics in inhomogeneous media or polarization-dependent systems.
URI
DOI
10.1364/OPTICA.442304
Versión del editor
Colecciones
- ALF. Artículos [303]