Finite-system effects on high-harmonic generation: from atoms to solids

Abstract

Using time-dependent density functional theory, high-harmonic generation (HHG) is studied in one-dimensional structures of sizes from a single nucleus up to hundreds of nuclei. The HHG cutoff is observed to extent linearly with the system size from the well known atomic HHG cutoff and is found to converge into the previously observed cutoffs for bulk solids only for large systems. A change in the response from that of single atoms or small molecules is observed from system sizes of $N$ $\approx$ 6 nuclei and becomes independent of system size at $N\gtrsim 60$. The system-size dependence of the observed HHG cutoffs is found to follow the limitations, set by the finite size solid, on the classical motion of electron-hole pairs. Because of the relation between recombination energy and electron-hole propagation length in the system, high-energy recombination events are not possible in small systems but become accessible for larger systems resulting in the change of the cutoff energies with system size. When varying the field intensity we observe that the cutoffs move linearly with the intensity even for small systems of $N\gtrsim 6$ that are far from the limit of a bulk solid.

arXiv comment9 pages, 6 figures

References in corpus (16)

• Bright Coherent Ultrahigh Harmonics in the keV X-Ray Regime from Mid-Infrared Femtosecond Lasers
• Sub-cycle control of terahertz high-harmonic generation by dynamical Bloch oscillations
• High harmonic generation from Bloch electrons in solids
• Impact of the electronic band structure in high-harmonic generation spectra of solids
• Ab-initio multi-scale simulation of high-harmonic generation in solids
• High-harmonic generation in solids with and without topological edge states
• The Effect of Multiple Conduction Bands on High Harmonic Emission from Dielectrics
• Plasmon-assisted high-harmonic generation in graphene
• Trajectory analysis of high-harmonic generation from periodic crystals
• Time-dependent population imaging for solid high harmonic generation
• High-order harmonic generation in solid slabs beyond the single active electron
• Gauge invariance and the interpretation of inter- and intraband processes in high-order harmonic generation from bulk solids
• Nonsequential Double Recombination in Intense Laser Fields
• Strong-field absorption and emission of radiation in two-electron systems calculated with time-dependent natural orbitals
• Non-Sequential Double Recombination High Harmonic Generation in Molecular-like Systems
• Same Period Emission and Recombination in Non-Sequential Double Recombination High-Harmonic Generation in H${}_2$

Cited by in corpus (26)

• Reciprocal-space-trajectory perspective on high harmonic generation in solids
• High-harmonic generation in Su-Schrieffer-Heeger chains
• High-harmonic generation from few layer hexagonal boron nitride: evolution from the monolayer to the bulk response
• Enhanced high-order harmonic generation in donor-doped band-gap materials
• Terahertz driven extremely nonlinear bulk photogalvanic currents in non-resonant conditions
• Crystal-momentum-resolved contributions to multiple plateaus of high-order harmonic generation from band-gap materials
• Robustness of topologically sensitive harmonic generation in laser-driven linear chains
• Determining the optimum thickness for high harmonic generation from nanoscale thin films: an ab initio computational study
• Correlation effects in high-harmonic generation from finite systems
• High order harmonic generation in semiconductors driven at near- and mid-IR wavelengths
• Strong-field-driven dynamics and high-harmonic generation in interacting 1D systems
• Multielectron interference of intraband harmonics in solids
• Propagation effects in high-harmonic generation from dielectric thin films
• Edge-state and bulk-like laser-induced correlation effects in high-harmonic generation from a linear chain
• Extended high-harmonic spectra through cascade resonance in confined quantum systems
• High harmonics from backscattering of delocalized electrons
• Uncovering Extreme Nonlinear Dynamics in Solids Through Time-Domain Field Analysis
• Edge-state-induced correlation effects in two-color high-harmonic generation
• Factorization of high-harmonic generation yields in impurity-doped materials
• High-order harmonic generation in hexagonal nanoribbons
• Enhanced high-order harmonics through periodicity breaks: from backscattering to impurity states
• Formation of the solid-state high-order harmonic generation plateau through destructive interference
• Laser field strength dependence of solid high-harmonic generation from doped systems
• Simulating strong-field electron-hole dynamics in solids probed by attosecond transient absorption spectroscopy
• High-harmonic spectra of hexagonal nanoribbons from real-space time-dependent Schrödinger calculations
• Effects of electronic correlation on the high harmonic generation in helium: a time-dependent configuration interaction singles vs time-dependent full configuration interaction study