Open AccessLinear and nonlinear optical properties of vertically coupled cylindrical double quantum dots with modified Pöschl-Teller potential
Author(s) -
Tigran Sargsian,
M. Ya. Vinnichenko,
D. B. Hayrapetyan
Publication year - 2022
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2227/1/012018
Subject(s) - refractive index , nonlinear system , quantum dot , materials science , lattice (music) , absorption (acoustics) , condensed matter physics , spectral line , molecular physics , absorption spectroscopy , quantum , optics , physics , quantum mechanics , optoelectronics , acoustics
Linear and third-order nonlinear absorption coefficients have been theoretically investigated in a system of vertically coupled cylindrical double quantum dots with the modified Pöschl-Teller potential in the axial direction and parabolic potential in the radial direction. Also, changes in the refractive index in these conditions were obtained. For intraband optical transitions of charge carriers in such system the selection rules have been obtained. The behaviour of the linear, nonlinear and total absorption spectra and changes in the refractive index have been theoretically observed for different lattice temperatures and illustrated by the corresponding graphs for two temperatures.