Influence of the magnetopolaron effect on light reflection and absorption by a wide semiconductor quantum well

TL;DR

This paper investigates how the magnetopolaron effect influences light reflection and absorption in wide semiconductor quantum wells, considering the impact of QW width and magnetic fields on electronic excitations.

Contribution

It presents a theoretical analysis of light spectra in wide quantum wells accounting for magnetopolaron-induced level splitting and QW width effects, extending previous narrow QW models.

Findings

Reflection and absorption depend on QW width in wide wells.

The theory applies across various radiative and non-radiative broadening ratios.

Magnetopolaron effects cause splitting of electron-hole pair energy levels.

Abstract

Light reflection and absorption spectra by a semiconductor quantum well (QW) , which width is comparable to a light wave length of stimulating radiation, are calculated. A resonance with two close located exited levels is considered. These levels can arise due to splitting of an energy level of an electron-hole pair (EHP) due to magnetopolaron effect, if the QW is in a quantizing magnetic field directed perpendicularly to the QW plane. It is shown that unlike a case of narrow QWs light reflection and absorption depend on a QW width $d$. The theory is applicable at any ratio of radiative and non-radiative broadenings of electronic excitations.