Intense laser field effects on the third-harmonic generation in a quantum pseudodot system

Sakiroglu S., Kilic D. G., Yesilgul U., Ungan F., Kasapoglu E., Sari H., ...More

PHYSICA B-CONDENSED MATTER, vol.521, pp.215-220, 2017 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 521
  • Publication Date: 2017
  • Doi Number: 10.1016/j.physb.2017.06.071
  • Journal Name: PHYSICA B-CONDENSED MATTER
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.215-220
  • Keywords: Quantum dot, Intense laser field, Nonlinear optics, ELECTROMAGNETICALLY INDUCED TRANSPARENCY, NONLINEAR-OPTICAL RECTIFICATION, 3RD HARMONIC-GENERATION, MAGNETIC-FIELD, ELECTRIC-FIELD, HYDROGENIC IMPURITIES, DOT SYSTEM, WELL, TRANSITIONS, COEFFICIENT
  • Dokuz Eylül University Affiliated: Yes

Abstract

In this research, we present the effects of high-frequency intense laser field on the third-harmonic generation associated with intersubband transitions in a two-dimensional quantum pseudodot system subjected to an uniform external magnetic field. Non-resonant monochromatic laser radiation with circular polarization is considered within the framework of high-frequency Floquet approach. On the basis of the compact-density matrix approach and an iterative method, the third-harmonic generation coefficient is calculated. The results presented for a GaAs quantum dot show that: (i) the position and magnitude of the resonant peak of third-harmonic generation depend strongly on magnetic field, the chemical potential and zero-point of pseudoharmonic potential; (ii) the strength of intense laser field modifies the confinement potential which results in considerable changes in the nonlinear optical response of the system.