Abstract
Exciton binding energies, oscillator strength, optical rectification coefficients and second harmonic generation are investigated using three different confinement potentials in a CdO/ZnO core/shell quantum dot. The bare potential, Smorodinsky–Winternitz potential and Woods–Saxon potential are employed in the Hamiltonian. The position dependent dielectric function is used. The electronic properties are found using variational formulism within a single band effective mass approximation whereas the optic properties are investigated using compact density matrix approach. The results show that different confinement potentials lead to significant changes in the coefficients of optical rectification and the second harmonic generations and the effects of confined potentials are more pronounced in the strong confinement region. The resonant peaks in the nonlinear optical rectification coefficients and second harmonic generation are blue shifted to larger photon energies with the various confined potentials and the results are enhanced using Smorodinsky–Winternitz potential. The obtained results can be applied for the potential applications for fabricating opto-electronic devices.
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31 October 2018
In the original publication of the article, the third author name was spelled out incorrectly and missed to include as co-corresponding author. The correct author group is given in this correction.
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Peter, A.J., Karthikeyan, N. & Woo, C.W. Optical rectification coefficient in an oxide quantum dot with different confinement potentials. Opt Quant Electron 50, 250 (2018). https://doi.org/10.1007/s11082-018-1497-x
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DOI: https://doi.org/10.1007/s11082-018-1497-x