Finite-difference time-domain simulations of exciton-polariton resonances in quantum-dot arrays
2008 (English)In: Optics Express, ISSN 1094-4087, Vol. 16, no 7, 4507-4519 p.Article in journal (Refereed) Published
The optical properties of nanosize quantum-dot (QD) arrays are found to vary significantly around the exciton resonance frequency of the QDs. In order to simulate the interactions between electromagnetic waves and QD arrays, a general auxiliary-differential-equation, finite-difference time-domain approach is introduced and utilized in this article. Using this numerical method, the exciton-polariton resonances of single-layer and double-layer GaAs QD arrays are studied. The optical properties of a single-layer QD array are found to be characterized by the Mie resonance of its constituent QDs, while a double-layer QD array is characterized by the quasi-dipole formed by two QDs positioned in each of the two layers.
Place, publisher, year, edition, pages
2008. Vol. 16, no 7, 4507-4519 p.
Excitons; Finite difference time domain method; Optical properties; Semiconductor quantum dots; Exciton-polariton resonances; Quantum-dot arrays; Resonance; article; computer simulation; finite element analysis; light; methodology; surface plasmon resonance; theoretical model; Computer Simulation; Finite Element Analysis; Light; Models, Theoretical; Quantum Dots; Surface Plasmon Resonance
IdentifiersURN: urn:nbn:se:kth:diva-7500DOI: 10.1364/OE.16.004507ISI: 000255100400015ScopusID: 2-s2.0-41649112952OAI: oai:DiVA.org:kth-7500DiVA: diva2:12545
QC 20150727. Uppdaterad från Submitted till Published 20100825.2007-09-252007-09-252015-07-27Bibliographically approved