High harmonic generations in GaAs/AlGaAs superlattice: Effect of electric and magnetic field

Öztürk E., Altun D., Öztürk O., Alaydin B. Ö.

Solid State Communications, vol.372, 2023 (SCI-Expanded, Scopus) identifier

  • Publication Type: Article / Article
  • Volume: 372
  • Publication Date: 2023
  • Doi Number: 10.1016/j.ssc.2023.115300
  • Journal Name: Solid State Communications
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, DIALNET, Civil Engineering Abstracts
  • Keywords: Electric field, Magnetic field, Nonlinear optical rectification (NOR), Second harmonic generation (SHG), Superlattice, Third harmonic generation (THG)
  • Sivas Cumhuriyet University Affiliated: Yes

Abstract

In this study, we have examined the nonlinear optical rectification (NOR), the second harmonic generation (SHG), and the third harmonic generation (THG) coefficients of the AlxGa1-xAs/GaAs superlattice with a periodically increased barrier width under magnetic field (B) and electric field (F). All calculations are completed using the finite element method under the effective mass approximation. The electric field's polarity (±) changes the probability density of wavefunctions. For B = 0, F = −5 kV/cm (particularly for the difference between energy levels (Efi)) is a critical value. Whereas the Efi value decreases between −40