A nonlinear switching mechanism in quantum dot and metallic nanoparticle hybrid systems

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Second harmonic generation and two-photon photoluminescence in CdS quantum dots near metallic nanoparticles are theoretically and experimentally investigated. A control laser field is applied to the hybrid system, which couples with the surface plasmons of the metal nanoparticles. The polarized meta...

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Detalles Bibliográficos
Autores principales:	von Bilderling, Catalina, Bragas, Andrea Verónica
Publicado:	2013
Materias:	Hybrid nanomaterials Metallic nanoparticles Quantum dots Second harmonic generation Switching mechanisms
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_21951071_v1_n6_p460_Cox http://hdl.handle.net/20.500.12110/paper_21951071_v1_n6_p460_Cox
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_21951071_v1_n6_p460_Cox
record_format	dspace
spelling	paper:paper_21951071_v1_n6_p460_Cox2023-06-08T16:35:08Z A nonlinear switching mechanism in quantum dot and metallic nanoparticle hybrid systems von Bilderling, Catalina Bragas, Andrea Verónica Hybrid nanomaterials Metallic nanoparticles Quantum dots Second harmonic generation Switching mechanisms Second harmonic generation and two-photon photoluminescence in CdS quantum dots near metallic nanoparticles are theoretically and experimentally investigated. A control laser field is applied to the hybrid system, which couples with the surface plasmons of the metal nanoparticles. The polarized metal nanoparticles then interact with the quantum dots through dipole-dipole interactions, which enhances the intensity of the second harmonic signal from the quantum dots. The density matrix method is used to numerically simulate the second harmonic signal emitted by the quantum dots. It is found that the enhancement of the second harmonic signal can be switched on and off by changing the control field intensity. Alternatively, the second harmonic signal enhancement can be turned on or off by changing the frequency of the control field. This is an interesting finding which can be used to fabricate nonlinear all optical nanoswitching devices from hybrid systems. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Fil:von Bilderling, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Bragas, A.V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2013 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_21951071_v1_n6_p460_Cox http://hdl.handle.net/20.500.12110/paper_21951071_v1_n6_p460_Cox
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Hybrid nanomaterials Metallic nanoparticles Quantum dots Second harmonic generation Switching mechanisms
spellingShingle	Hybrid nanomaterials Metallic nanoparticles Quantum dots Second harmonic generation Switching mechanisms von Bilderling, Catalina Bragas, Andrea Verónica A nonlinear switching mechanism in quantum dot and metallic nanoparticle hybrid systems
topic_facet	Hybrid nanomaterials Metallic nanoparticles Quantum dots Second harmonic generation Switching mechanisms
description	Second harmonic generation and two-photon photoluminescence in CdS quantum dots near metallic nanoparticles are theoretically and experimentally investigated. A control laser field is applied to the hybrid system, which couples with the surface plasmons of the metal nanoparticles. The polarized metal nanoparticles then interact with the quantum dots through dipole-dipole interactions, which enhances the intensity of the second harmonic signal from the quantum dots. The density matrix method is used to numerically simulate the second harmonic signal emitted by the quantum dots. It is found that the enhancement of the second harmonic signal can be switched on and off by changing the control field intensity. Alternatively, the second harmonic signal enhancement can be turned on or off by changing the frequency of the control field. This is an interesting finding which can be used to fabricate nonlinear all optical nanoswitching devices from hybrid systems. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
author	von Bilderling, Catalina Bragas, Andrea Verónica
author_facet	von Bilderling, Catalina Bragas, Andrea Verónica
author_sort	von Bilderling, Catalina
title	A nonlinear switching mechanism in quantum dot and metallic nanoparticle hybrid systems
title_short	A nonlinear switching mechanism in quantum dot and metallic nanoparticle hybrid systems
title_full	A nonlinear switching mechanism in quantum dot and metallic nanoparticle hybrid systems
title_fullStr	A nonlinear switching mechanism in quantum dot and metallic nanoparticle hybrid systems
title_full_unstemmed	A nonlinear switching mechanism in quantum dot and metallic nanoparticle hybrid systems
title_sort	nonlinear switching mechanism in quantum dot and metallic nanoparticle hybrid systems
publishDate	2013
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_21951071_v1_n6_p460_Cox http://hdl.handle.net/20.500.12110/paper_21951071_v1_n6_p460_Cox
work_keys_str_mv	AT vonbilderlingcatalina anonlinearswitchingmechanisminquantumdotandmetallicnanoparticlehybridsystems AT bragasandreaveronica anonlinearswitchingmechanisminquantumdotandmetallicnanoparticlehybridsystems AT vonbilderlingcatalina nonlinearswitchingmechanisminquantumdotandmetallicnanoparticlehybridsystems AT bragasandreaveronica nonlinearswitchingmechanisminquantumdotandmetallicnanoparticlehybridsystems
_version_	1768546744433377280

A nonlinear switching mechanism in quantum dot and metallic nanoparticle hybrid systems

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