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Nanoscale excitonic-plasmonic optical waveguiding by metal-coated quantum dots
KTH, Skolan för bioteknologi (BIO), Teoretisk kemi (stängd 20110512).ORCID-id: 0000-0002-2442-1809
KTH, Skolan för bioteknologi (BIO), Teoretisk kemi (stängd 20110512).
KTH, Skolan för informations- och kommunikationsteknik (ICT), Fotonik och optik.
KTH, Skolan för informations- och kommunikationsteknik (ICT), Fotonik och optik.
Vise andre og tillknytning
2006 (engelsk)Inngår i: Proceedings of International Symposium on Biophotonics, Nanophotonics and Metamaterials, 2006, s. 426-431Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

A three-dimensional metal-coated semiconductor-quantum-dot (QD) nanoscale lattice structure is designed for optical waveguiding. It is based on three notions: i) Excitons are first photogenerated in the QDs by the incident electromagnetic field which is the optical wave to be guided: ii) The exciton-polariton effect in the QD structure induces an extra optical dispersion in the QDs: iii) The high contrast ratio between the optical dispersions of the QDs and the background material creates clear photonic bandgaps. By carefully designing the QD size and the QD lattice structure, perfect electromagnetic field reflection can be obtained for the incident wave in the lossless case, thus providing the fundamental basis of QDs for optical waveguide applications. Metal coating at the QD surface generates a surface plasmon spatially confined in the QD so that the exciton generation becomes enhanced for a better dielectric modulation.

sted, utgiver, år, opplag, sider
2006. s. 426-431
Emneord [en]
Photonic Crystal, Band Parameters, Guides, Semiconductors, Absorption
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-41747ISI: 000247372900123Scopus ID: 2-s2.0-46149125309ISBN: 978-0-7803-9773-6 (tryckt)OAI: oai:DiVA.org:kth-41747DiVA, id: diva2:445127
Konferanse
International Symposium on Biophotonics, Nanophotonics and Metamaterials, Metamaterials 2006; Hangzhou; 16 October 2006 through 18 October 2006
Merknad
QC 20111003Tilgjengelig fra: 2011-10-03 Laget: 2011-09-30 Sist oppdatert: 2011-10-03bibliografisk kontrollert

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Fu, YingÅgren, Hans

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Totalt: 49 treff
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