The Resonant Light Absorption by Semiconductor Quantum Dots

I. G. Lang; L. I. Korovin; S. T. Pavlov

arXiv:cond-mat/0703324·cond-mat.stat-mech·May 23, 2007

The Resonant Light Absorption by Semiconductor Quantum Dots

I. G. Lang, L. I. Korovin, S. T. Pavlov

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TL;DR

This paper calculates the resonant light absorption cross section of semiconductor quantum dots, emphasizing the importance of electric and magnetic field interference and its dependence on exciton damping.

Contribution

It introduces a detailed calculation of absorption cross section considering electric and magnetic field interference effects in quantum dots.

Findings

01

Absorption cross section is proportional to exciton nonradiative damping.

02

Interference of electric and magnetic fields significantly affects absorption.

03

Resonance with specific excitons in cubical crystals is analyzed.

Abstract

The cross section of light absorption by semiconductor quantum dots in the case of the resonance with excitons $Γ_{6} \times Γ_{7}$ in cubical crystals $T_{d}$ is calculated. It is shown that an interference of stimulating and induced electric and magnetic fields must be taken into account. The absorption section is proportional to the exciton nonradiative damping $γ$ .

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Taxonomy

TopicsSemiconductor Quantum Structures and Devices · Advanced Research in Systems and Signal Processing · Optical and Acousto-Optic Technologies