Dynamics of nonlinear optical rectification, second, and third harmonic generation in asymmetric triangular double quantum wells due to static electric and magnetic fields

In this study, we present a theoretical simulation of the impact of applied external electric and magnetic fields on the nonlinear optical rectification (NOR), second harmonic generation (SHG), and third harmonic generation (THG) in typical G a A s / G a 0.6 A l 0.4 A s asymmetric double triangular...

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Bibliographic Details
Published inEuropean physical journal plus Vol. 137; no. 4; p. 466
Main Authors Al, E. B., Kasapoglu, E., Ungan, F.
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 15.04.2022
Springer Nature B.V
Subjects
Applied and Technical Physics
Approximation
Asymmetry
Atomic
Complex Systems
Condensed Matter Physics
Electric fields
Energy levels
Intersubband transitions
Investigations
Iterative methods
Magnetic fields
Mathematical analysis
Mathematical and Computational Physics
Molecular
Nonlinear dynamics
Nonlinear optics
Optical and Plasma Physics
Optical properties
Physics
Physics and Astronomy
Quantum dots
Quantum wells
Regular Article
Schrodinger equation
Second harmonic generation
Theoretical
Wave functions
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Summary:In this study, we present a theoretical simulation of the impact of applied external electric and magnetic fields on the nonlinear optical rectification (NOR), second harmonic generation (SHG), and third harmonic generation (THG) in typical G a A s / G a 0.6 A l 0.4 A s asymmetric double triangular quantum wells. At first, we have calculated the wave functions and the subband energy levels for the lowest bounded four states confined within the structure by solving the Schrödinger equation using the diagonalization method within the framework of the effective mass and single parabolic band approximations. Then, the analytical expressions of the NOR, SHG, and THG are obtained using compact density matrix approach via iterative method. According to the numerical results, it is concluded that electric and magnetic fields play a vital and important role in the electronic and optical properties of the system and they can be used to adjust the intersubband transitions and change the associated optical sensitivities.
ISSN:2190-5444
2190-5444
DOI:10.1140/epjp/s13360-022-02702-x