Publication:
Linear and nonlinear optical properties of symmetric and asymmetric double triangular quantum dots withinside the presence of magnetic field
Linear and nonlinear optical properties of symmetric and asymmetric double triangular quantum dots withinside the presence of magnetic field
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Date
2024-10
Authors
Emre Bahadir AL
Norshamsuri Ali @ Hasim
Rosdisham Endut
Syed Alwee Aljunid Syed Junid
Norshah Rizal Ali
Nor Roshidah Yusof
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Publisher
John Wiley and Sons Inc.
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Abstract
Linear and third‐order nonlinear optical absorption coefficients and relative refractive index changes in symmetric and asymmetric double triangular quantum dots are examined theoretically. The dependence of these optical properties on the magnetic field is examined. After calculating energies and wave functions within the effective mass and parabolic band approaches, analytical expressions of linear and nonlinear optical properties are obtained using the compact density matrix approach and iterative method. Numerical calculations are presented for typical GaAs/AlGaAs material. The results show that the magnetic field causes different effects on the and transitions. Moreover, the calculated results also reveal that the resonance frequency and nonlinear contribution are different in symmetric and asymmetric structures. As a result, it is concluded that the magnetic field plays a vital and important role in the electronic and optical properties of the system and can be used to tune the inter‐subband transitions and change the corresponding optical sensitivities.
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Keywords
Applied magnetic field effect,
Double triangular quantum DOT,
Optical properties,
Electrical properties