Pulsed and monochromatic excitation of semiconductor quantum wells under the conditions of quantum confinement

Autor: I. G. Lang, S. T. Pavlov
Rok vydání: 2010
Předmět:
Zdroj: Physics of the Solid State. 52:1736-1743
ISSN: 1090-6460
1063-7834
DOI: 10.1134/s1063783410080263
Popis: The reflectance and absorbance of light by quantum wells whose width is comparable to the light wavelength have been calculated. The difference in the refractive indices of the materials of the quantum well and the barriers has been taken into account. Pulsed irradiation with an arbitrary shape of the exciting pulse has been considered, and the existence of two closely spaced discrete excitation levels has been assumed. This pair of levels can correspond to two magnetopolaron states in a quantizing magnetic field directed perpendicular to the plane of the quantum well. The ratio between the magnitudes of nonradiative and radiative dampings of electronic excitations is arbitrary. The final results have been obtained without invoking the approximation in which the Coulomb interaction of electrons and holes is negligible.
Databáze: OpenAIRE