Plasmonic Effect on the Optical Properties in a Hybrid V-Type Three-Level Quantum Dot-Metallic Nanoparticle Nanosystem

We investigated theoretically the exciton–plasmon coupling effects on the population dynamics and the absorption properties of a hybrid nanosystem composed of a metal nanoparticle (MNP) and a V-type three-level semiconductor quantum dot (SQD), which are created by the interaction with the induced di...

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Bibliographic Details
Published in:Plasmonics (Norwell, Mass.) Mass.), 2018-02, Vol.13 (1), p.39-46
Main Authors: Ko, Myong-Chol, Kim, Nam-Chol, Choe, Song-Il, So, Gwang-Hyok, Jang, Pong-Ryol, Kim, Yong-Jin, Kim, Il-Gwang, Li, Jian-Bo
Format: Article
Language:English
Subjects:
Biochemistry
Biological and Medical Physics
Biophysics
Biotechnology
Chemistry
Chemistry and Materials Science
Couplings
Dipole moments
Excitons
Hybrid systems
Nanoparticles
Nanotechnology
Nonlinear response
Optical properties
Plasmons
Quantum dots
Vanadium
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Summary:We investigated theoretically the exciton–plasmon coupling effects on the population dynamics and the absorption properties of a hybrid nanosystem composed of a metal nanoparticle (MNP) and a V-type three-level semiconductor quantum dot (SQD), which are created by the interaction with the induced dipole moments in the SQD and the MNP, respectively. Excitons of the SQD and the plasmons of the MNP in such a hybrid nanosystem could be coupled strongly or weakly to demonstrate novel properties of the hybrid system. We also find that the gain happens in such a hybrid system, because of the coherent interaction between the SQD and the MNP. Our results show that the non-linear optical response of the hybrid nanosystem can be greatly enhanced or depressed due to the exciton–plasmon couplings.
ISSN:1557-1955
1557-1963
DOI:10.1007/s11468-016-0481-1