Plasmonics

, Volume 12, Issue 2, pp 383–391 | Cite as

Quadratic Electro-Optic Effect and Electro Absorption Process of Multi-layer Spherical Quantum Dot Enhanced by Metal Nanoparticle

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Abstract

In this work, the quadratic electro-optic effects (QEOE) and electro-absorption (EA) process of hybrid structure consisting of metal nanoparticle (MNP) coupled to multi-layer spherical quantum dot (MSQD) are investigated numerically. The energy levels and corresponding wave functions of Schrödinger equation in the effective mass approximation are obtained using the fourth-order Runge-Kutta method. The effect of MNP in the vicinity of MSQD is calculated by considering local field enhancement. Then, the variation of QEOE and EA process of hybrid system is reported. The results show that the presence of MNP near MSQD enhances the optical nonlinearity. Also, by changing the parameters such as distance between MNP and MSQD, and radius of MNP, the variations of optical nonlinearity are studied.

Keywords

Metal nanoparticle Multi-layered spherical quantum dot Quadratic electro-optic effect Electro-absorption process 
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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  1. 1.Department of Physics, College of ScienceShiraz UniversityShirazIran
  2. 2.Department of PhysicsShiraz University of TechnologyShirazIran

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