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Título
Optical anisotropy of non-perturbative high-order harmonic generation in gapless graphene
Autor(es)
Materia
Electromagnetic radiation
High harmonic generation
Infrared lasers
Optical properties
Polarization control
Ultrashort pulses
Fecha de publicación
2019-03
Citación
Zurrón-Cifuentes, O., Boyero-García, R., Hernández-García, C., Picón, A. and Plaja, L. (2019). Optical anisotropy of non-perturbative high-order harmonic generation in gapless graphene. Opt. Express 27, 7776-7786
Resumen
[EN]High harmonic generation in atomic or molecular targets stands as a robust mechanism to produce coherent ultrashort pulses with controllable polarization in the extreme-ultraviolet. However, the production of elliptically or circularly-polarized harmonics is not straightforward, demanding complex combinations of elliptically or circularly-polarized drivers, or the use of molecular alignment techniques. Nevertheless, recent studies show the feasibility of high-harmonic generation in solids. In contrast with atoms and molecules, solids are high-density targets and therefore more efficient radiation sources. Among solid targets, 2D materials are of special interest due to their particular electronic structure, which conveys special optical properties. In this paper, we present theoretical calculations that demonstrate an extraordinary complex light-spin conversion in single-layer graphene irradiated at non perturbative intensities. Linearly-polarized drivings result in the emission of elliptically-polarized harmonics, and elliptically-polarized drivings may result in linearly-polarized or ellipticity-reversed harmonics. In addition, we demonstrate the ultrafast temporal modulation of the harmonic ellipticity.
URI
DOI
10.1364/OE.27.007776
Versión del editor
Colecciones
- ALF. Artículos [314]