Electron-related optical responses in triple delta-doped quantum wells

Ungan F., Mora-Ramos M. E., Kasapoglu E., Sari H., Sokmen I.

PHILOSOPHICAL MAGAZINE, cilt.99, sa.5, ss.644-658, 2019 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 99 Sayı: 5
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1080/14786435.2018.1549370
  • Dergi Adı: PHILOSOPHICAL MAGAZINE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.644-658
  • Anahtar Kelimeler: delta-doped quantum well, optical response, intense laser field, REFRACTIVE-INDEX CHANGES, 3RD HARMONIC-GENERATION, ELECTROMAGNETICALLY INDUCED TRANSPARENCY, ABSORPTION COEFFICIENTS, 2ND-HARMONIC GENERATION, INTERSUBBAND ABSORPTION, HYDROSTATIC-PRESSURE, MAGNETIC-FIELD, EXCITON-STATES, RECTIFICATION
  • Sivas Cumhuriyet Üniversitesi Adresli: Evet

Özet

A detailed theoretical study on the electron-related optical responses in triple delta-doped GaAs quantum wells in the presence of non-resonant, monochromatic intense laser field is presented. For this purpose, we first obtained the bound subband energy levels and their corresponding envelope wave functions of the structure for different central doping concentrations within the effective-mass approximation. Then, we calculate the effect of the non-resonant intense laser field on the optical properties of this structure using the compact-density-matrix approach via the iterative method. We found that the optical absorption coefficients and refractive index changes in the triple delta-doped GaAs quantum well can be modulated by changing the central doping concentration and the intensity of the non-resonant, monochromatic laser field. In addition, it is shown that a sufficiently intense laser field suppresses the multiple quantum well configuration towards a single potential well one and the optical response becomes practically independent of the delta-doping concentration.