Abstract
The spontaneous emission of a spherical semiconductor quantum dot is considered without using the dipole approximation. It is shown that the dipole-forbidden radiation of a shallow potential well with one electron level becomes more intense than the dipole-permitted radiation of a deeper potential well and that the potential deepening makes the dipole approximation closer. It is also shown that the cylindrically symmetric anisotropic radiation can be obtained from a spherical quantum dot if the direction of the quantization axis remains unchanged for the acts of photon emission.
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Funding
This work was supported by the Science Committee of the Ministry of Education, Science, Culture and Sports of the Republic of Armenia within the framework of the Laboratory for Research and Modeling of Quantum Phenomena at YSU.
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Translated by V. Musakhanyan
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Muradyan, G.A., Arzumanyan, L.R. & Muradyan, A.Z. Spontaneous Emission of a Semiconductor Quantum Dot without the Dipole Approximation. J. Contemp. Phys. 55, 317–322 (2020). https://doi.org/10.3103/S106833722004012X
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DOI: https://doi.org/10.3103/S106833722004012X