Generation of even and odd high harmonics in resonant metasurfaces using single and multiple ultra-intense laser pulses

Abstract

High harmonic generation (HHG) opens a window on the fundamental science of strong-field light-mater interaction and serves as a key building block for attosecond optics and metrology. Resonantly enhanced HHG from hot spots in nanostructures is an attractive route to overcoming the well-known limitations of gases and bulk solids. We demonstrate a nanoscale platform for highly efficient HHG driven by strong mid-infrared laser pulses: an ultra-thin resonant gallium phosphide (GaP) metasurface. The wide bandgap and the lack of inversion symmetry of the GaP crystal enable the generation of even and odd harmonics covering a wide range of photon energies between 1.3 and 3 eV with minimal reabsorption. The resonantly enhanced conversion efficiency facilitates single-shot measurements that avoid material damage and pave the way to controllable transition between perturbative and non-perturbative regimes of light-matter interactions at the nanoscale.

36 pages, 9 figures, 2 tables

References in corpus (4)

• Shaped-pulse optimisation of coherent soft-x-rays
• Resonantly enhanced second-harmonic generation using III-V semiconductor all-dielectric metasurfaces
• High harmonic generation from Bloch electrons in solids
• Single-Shot Multi-Stage Damage and Ablation of Silicon by Femtosecond Mid-infrared Laser Pulses

Cited by in corpus (11)

• High-harmonic generation from metasurfaces empowered by bound states in the continuum
• Polarization-controlled dynamically switchable high-harmonic generation from all-dielectric metasurfaces governed by dual bound states in the continuum
• Nonlinear chiral metaphotonics
• Robust enhancement of high-harmonic generation from all-dielectric metasurfaces enabled by polarization-insensitive bound states in the continuum
• Spectral tuning of high-harmonic generation with resonance-gradient metasurfaces
• High-order (N=4-6) multi-photon absorption and mid-infrared Kerr nonlinearity in GaP, ZnSe, GaSe, and ZGP crystals
• High-harmonic generation enhancement with graphene heterostructures
• Scattering matrix for chiral harmonic generation and frequency mixing in nonlinear metasurfaces
• Noncollinear phase-matching of high harmonic generation in solids
• Optical bound states in the continuum in subwavelength gratings made of an epitaxial van der Waals material
• Generation and Enhancement of Persistent Nanoscale Magnetization in All-Dielectric Metasurfaces by Optically Injected and Localized Free Carriers