Crystal-momentum-resolved contributions to multiple plateaus of high-order harmonic generation from band-gap materials

Abstract

We study the crystal-momentum-resolved contributions to the high-order harmonic generation (HHG) in band-gap materials, and identify the relevant initial crystal momenta for the first and higher plateaus of the HHG spectra. We do so by using a time-dependent density-functional theory model of one-dimensional linear chains. We introduce a self-consistent periodic treatment for the infinitely extended limit of the linear chain model, which provides a convenient way to simulate and discuss the HHG from a perfect crystal beyond the single-active-electron approximation. The multi-plateau spectral feature is elucidated by a semiclassical k-space trajectory analysis with multiple conduction bands taken into account. In the considered laser-interaction regime, the multiple plateaus beyond the first cutoff are found to stem mainly from electrons with initial crystal momenta away from the Gamma point (k = 0), while electrons with initial crystal momenta located around the Gamma point are responsible for the harmonics in the first plateau. We also show that similar findings can be obtained from calculations using a sufficiently large finite model, which proves to mimic the corresponding infinite periodic limit in terms of the band structures and the HHG spectra.

13 pages, 7 figures, REVTeX 4.1

References in corpus (14)

• High harmonic generation from Bloch electrons in solids
• Impact of the electronic band structure in high-harmonic generation spectra of solids
• Ellipticity dependence of high-harmonic generation in solids: unraveling the interplay between intraband and interband dynamics
• Strong-Field Perspective on High-Harmonic Radiation from Bulk Solids
• The Effect of Multiple Conduction Bands on High Harmonic Emission from Dielectrics
• Multi-level perspective on high-order harmonic generation in solids
• Diabatic Mechanisms of Higher-Order Harmonic Generation in Solid-State Materials under High-Intensity Electric Fields
• Mechanism of High-Order Harmonic Generation from Periodic Potentials
• High-order harmonic generation in solid slabs beyond the single active electron
• High-harmonic generation in alpha-quartz by the electron-hole recombination
• Ellipticity dependence transition induced by dynamical Bloch oscillations
• Insight into High-order Harmonic Generation from Solids: The Contributions of the Bloch Wave-packets Moving on the Group and Phase Velocities
• Orientation-dependent transition rule in high-order harmonic generation from solids
• Michelson Interferometry of High-order Harmonic Generation in Solids

Cited by in corpus (7)

• Signatures of multi-band effects in high-harmonic generation in monolayer MoS${}_2$
• Expanded view of electron-hole recollisions in solid-state high-order harmonic generation: Full-Brillouin-zone tunneling and imperfect recollisions
• High-harmonic spectroscopy of strongly bound excitons in solids
• High harmonics from backscattering of delocalized electrons
• Edge-state and bulk-like laser-induced correlation effects in high-harmonic generation from a linear chain
• Enhanced high-order harmonics through periodicity breaks: from backscattering to impurity states
• Simulating strong-field electron-hole dynamics in solids probed by attosecond transient absorption spectroscopy