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Nonlinear optical rectification and optical bistability in a coupled asymmetric quantum dot-metal nanoparticle hybrid

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Carreño Sánchez, Fernando and Antón Revilla, Miguel Ángel and Paspalakis, Emmanuel (2018) Nonlinear optical rectification and optical bistability in a coupled asymmetric quantum dot-metal nanoparticle hybrid. Journal of Applied Physics, 124 (11). 8 p.. ISSN 0021-8979

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Official URL: https://doi.org/10.1063/1.5045207




Abstract

We study the optical response of a coupled asymmetric semiconductor quantum dot-spherical metal nanoparticle structure. The asymmetric quantum dot has permanent electric dipole moments that also interact with light. We derive the density matrix equations for the system including the modification of the electric field and the exciton-plasmon coupling. We emphasize on the effects of the nonlinear optical rectification and controlled optical bistability and analyze these phenomena for different values of the light intensity and different distances between the quantum dot and the metal nanoparticle. We show that when the system is set in a situation where optical bistability can be produced, the optical rectification of the hybrid system is bivalued. We also analyze the slow-down to reach the steady state when the system is driven close and far from the turning points.


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Uncontrolled Keywords:Optical rectification; Electric dipole moments; Optical bistability; Nanoparticles; Population inversion; Plasmonics; Plasmons; Excitons; Quantum dots
Subjects:Sciences > Physics > Solid state physics
Sciences > Physics > Optics
Medical sciences > Optics > Physical optics
ID Code:50834
Deposited On:05 Feb 2019 14:16
Last Modified:06 Feb 2019 09:07

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