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Volume 25 - ICOP & ICPET 2019
ICOP & ICPET _ INPC _ ICOFS 2019, 25 - ICOP & ICPET 2019: 137-140 |
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Dezhkam M. Electric Field Effect on Electronic Structure and Optical Properties of Hemispherical Quantum Dot with Wetting Layer. ICOP & ICPET _ INPC _ ICOFS 2019; 25 :137-140
URL: http://opsi.ir/article-1-1708-en.html
URL: http://opsi.ir/article-1-1708-en.html
Department of Physics, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran
Abstract: (1930 Views)
In this paper a hemispherical quantum dot-wetting layer under an external electric field has been considered. The electronic structure of the system has been calculated numerically by finite element method. The wetting layer has been accounted because of its effect on electronic structure. Results show that applying the electric field changes the energy levels of the system and the ground, first and second excited state energies decrease by increasing the electric field. To investigate the optical properties, two strong control and weak probe laser fields have been applied to the system and the linear and third-order nonlinear absorptions and dispersions of the probe pulse have been obtained. According to results the linear and third-order nonlinear absorptions and dispersions of the probe pulse exhibit blue shifts as the electric field increases.
Keywords: Electric field, Electronic structure, Hemispherical quantum dots, Linear and nonlinear optical properties
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