Área de investigación | Física |
Título | Transverse phase matching of high-order harmonic generation in single-layer graphene |
Tipo de publicación | Artículo de revista |
Año de publicación | 2021 |
Autores | Boyero-García, R, Zurrón-Cifuentes, O, Plaja, L, Hernández-García, C |
Revista | Opt. Express |
Volumen | 29 |
Número | 2 |
Páginas | 2488–2500 |
Palabras claves | Attosecond pulses, Extreme ultraviolet, Laser beams, Nonlinear optics, Phase matching, Strong field physics |
Abstract | The efficiency of high-harmonic generation (HHG) from a macroscopic sample is strongly linked to the proper phase matching of the contributions from the microscopic emitters. We develop a combined micro$+$macroscopic theoretical model that allows us to distinguish the relevance of high-order harmonic phase matching in single-layer graphene. For a Gaussian driving beam, our simulations show that the relevant HHG emission is spatially constrained to a phase-matched ring around the beam axis. This remarkable finding is a direct consequence of the non-perturbative behavior of HHG in graphene&\#x2014;whose harmonic efficiency scaling is similar to that already observed in gases&\#x2014; and bridges the gap between the microscopic and macroscopic HHG in single-layer graphene. |
DOI | 10.1364/OE.412639 |