2017/10/12 by Kenneth K. Hansen, Tobias Deffge, D. Bauer +1 · 2 citations
Mathematics · Physics and Astronomy · #Advanced Chemical Physics Studies #Advanced Fiber Laser Technologies #Atomic physics #Computational physics #Condensed matter physics #Electron #Harmonic #High harmonic generation #Laser #Laser-Matter Interactions and Applications #Mathematical analysis #Mathematics #Physics #Plateau (mathematics) #Quantum electrodynamics #Quantum mechanics #Slab #Surface second harmonic generation #cond-mat.other #physics.atom-ph #quant-ph
paper · pdf · doi:10.1103/physreva.96.053418
published as Phys. Rev. A 96, 053418 (2017) · 9 pages, 8 figures, RevTeX 4.1
arxiv created 2017/10/12 · openalex created_date 2017/10/20 · openalex publication_date 2017/11/20 · arxiv updated 2017/11/29 · openalex updated_date 2026/08/05
High-harmonic generation by a laser-driven solid slab is simulated using time-dependent density functional theory. Multiple harmonic plateaus up to very high harmonic orders are observed already at surprisingly low field strengths. The full all-electron harmonic spectra are, in general, very different from those of any individual Kohn-Sham orbital. Freezing the Kohn-Sham potential instead is found to be a good approximation for the laser intensities and harmonic orders considered. The origins of the plateau cutoffs are explained in terms of band gaps that can be reached by Kohn-Sham electrons and holes moving through the band structure.