Nonlinear optical properties of a hydrogenic impurity in an ellipsoidal finite potential quantum dot

The linear and the third-order nonlinear optical absorption coefficient and refractive index changes of a hydrogenic impurity in an ellipsoidal quantum dot have been investigated, using the compact-density matrix formalism and an iterative method. In this regard, the effect of the size and geometry...

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Bibliographic Details
Published in:Current applied physics 2011, 11(2), , pp.176-181
Main Authors: Rezaei, G., Vahdani, M.R.K., Vaseghi, B.
Format: Article
Language:English
Subjects:
absorption
Absorption coefficient
Aluminium
Aluminum
Ellipsoidal quantum dots
Hydrogenic impurity
Impurities
light intensity
Nonlinear optical properties
Nonlinearity
Quantum dots
Refractive index
Refractivity
물리학
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Summary:The linear and the third-order nonlinear optical absorption coefficient and refractive index changes of a hydrogenic impurity in an ellipsoidal quantum dot have been investigated, using the compact-density matrix formalism and an iterative method. In this regard, the effect of the size and geometry of the dot, aluminium concentration in GaAs/ Al xGa 1− x As structures, and optical intensity on the optical absorption coefficient and refractive index changes are investigated. It is found that the light intensity, size and geometry of the dot and aluminium concentration have a great influence on the absorption coefficient and refractive index changes of the dot.
ISSN:1567-1739
1878-1675
DOI:10.1016/j.cap.2010.07.002