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Nonlinear optical properties in GaAs/Al0.3Ga0.7As quantum dots of inversely quadratic Hellmann plus Kratzer potential

  • Regular Article – Optical Phenomena and Photonics
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Abstract

In this paper, we study in detail the effects of some factors on the optical absorption coefficients (OACs) and refractive index changes (RICs) in spherical quantum dots (QDs) with inversely quadratic Hellmann plus Kratzer potential. Firstly, Schrödinger equation related to confined QDs system is used by Nikiforov–Uvarov method, and the analytical expressions of different energy levels and wave functions are obtained. Then, the OACs and RICs are calculated by using compact density matrix theory and iterative method. Finally, numerical simulation denotes that these factors have an obvious influence on the nonlinear optical characteristics of the system.

Graphical abstract

The matric element \(\left| {M_{21} } \right|\) and energy level interval E21 along with rapid quantum dot radius in situations of several different Limiting potential depths. OACs and RICs along with rapid the photon energy in situations of several different quantum dot radii. OACs and RICs along with rapid the photon energy in situations of several different dissociation energies. OACs and RICs along with rapid the photon energy in situations of several different incident light intensities.

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Data Availability Statement

This manuscript has associated data in a data repository. [Authors’ comment: All data, models, and code generated or used during the study appear in the submitted article. The corresponding data will be provided when necessary.]

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Acknowledgements

We acknowledge Natural Science Foundation of Anhui Province (No. 1508085QF140) and National Natural Science Foundation of China (Grant Nos. 52174161, 12174161, 51702003, 61775087, and 11674312).

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Authors and Affiliations

  1. School of Mechanics and Photoelectric Physics, Anhui University of Science and Technology, Huainan, 232001, China

    Ceng Chang & Xuechao Li

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  1. Ceng Chang
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  2. Xuechao Li
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Contributions

CC contributed to software, validation, data processing, and writing—original. XL contributed to data curation, methodology, supervision, reviewing draft, and financial support.

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Correspondence to Xuechao Li.

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Chang, C., Li, X. Nonlinear optical properties in GaAs/Al0.3Ga0.7As quantum dots of inversely quadratic Hellmann plus Kratzer potential. Eur. Phys. J. D 76, 134 (2022). https://doi.org/10.1140/epjd/s10053-022-00453-z

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