Multi-level perspective on high-order harmonic generation in solids

Abstract

We investigate high-order harmonic generation in a solid, modeled as a multi-level system dressed by a strong infrared laser field. We show that the cutoff energies and the relative strengths of the multiple plateaus that emerge in the harmonic spectrum can be understood both qualitatively and quantitatively by considering a combination of adiabatic and diabatic processes driven by the strong field. Such a model was recently used to interpret the multiple plateaus exhibited in harmonic spectra generated by solid argon and krypton [Ndabashimiye {\it et al.}, Nature 534, 520 (2016)]. We also show that when the multi-level system originates from the Bloch state at the $\Gamma$ point of the band structure, the laser-dressed states are equivalent to the Houston states [Krieger {\it el al.} Phys. Rev. B 33, 5494 (1986)] and will therefore map out the band structure away from the $\Gamma$ point as the laser field increases. This leads to a semi-classical three-step picture in momentum space that describes the high-order harmonic generation process in a solid.

15 pages, 8 figures

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Cited by in corpus (35)

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• High-Harmonic Generation in a Correlated Electron System
• High-order harmonic generation in solid slabs beyond the single active electron
• Enhanced high-order harmonic generation in donor-doped band-gap materials
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• Cooper minimum of high-order harmonic spectra from MgO crystal in an ultrashort laser pulse
• Enhanced high harmonic generation in semiconductors by the excitation with multi-color pulses
• Probing the low-energy electron-scattering dynamics in liquids with high-harmonic spectroscopy
• Signatures of multi-band effects in high-harmonic generation in monolayer MoS${}_2$
• Nonadiabatic high-order harmonic generation from solids
• 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
• Time-dependent Hartree-Fock study of electron-hole interaction effects on high-harmonic generation from periodic crystals
• Ab-initio cluster approach for high-harmonic generation in liquids
• Expanded view of electron-hole recollisions in solid-state high-order harmonic generation: Full-Brillouin-zone tunneling and imperfect recollisions
• A Gauge Invariant Formulation of Interband and Intraband Currents in Solids
• Spectral control of high order harmonics through non-linear propagation effects
• Strong field induced electron density tide in high harmonic generation from solids
• Excitonic effects on high-harmonic generation in Mott insulators
• High-order harmonic generation from 2D periodic potentials in circularly and bichromatic circularly polarized laser fields
• Extended high-harmonic spectra through cascade resonance in confined quantum systems
• Optical Bloch modeling of few-cycle laser-induced electron dynamics in dielectrics
• Edge-state and bulk-like laser-induced correlation effects in high-harmonic generation from a linear chain
• Dynamics of high-harmonic generation in terms of complex Floquet spectral analysis
• Propagation time and nondipole contributions to intraband high-harmonic generation
• Edge-state-induced correlation effects in two-color high-harmonic generation
• Revisiting the Floquet-Bloch theory for an exactly solvable model of one-dimensional crystals in strong laser fields
• Optimizing attosecond pulse generation in solids by modulating electronic dynamics with monochromatic laser field
• Theoretical study of high harmonic generation in monolayer NbSe${}_2$
• Time- and angle-resolved photoelectron spectroscopy of strong-field light-dressed solids: prevalence of the adiabatic band picture
• Probing phonon dynamics with multi-dimensional high harmonic carrier envelope phase spectroscopy