Linear and nonlinear optical properties in spherical quantum dots: Modified Möbius squared potential

C P Onyenegecha

doi:10.1016/j.heliyon.2022.e10387

Linear and nonlinear optical properties in spherical quantum dots: Modified Möbius squared potential

Heliyon. 2022 Aug 26;8(8):e10387. doi: 10.1016/j.heliyon.2022.e10387. eCollection 2022 Aug.

Author

C P Onyenegecha^{1

2}

Affiliations

¹ School of Physical Sciences, Federal University of Technology Owerri, P.M.B 1526 Owerri, Nigeria.
² Africa Center of Excellence in Future Energies and Electrochemical systems (ACE-FUELS), Federal University of Technology Owerri, P.M.B 1526, Owerri, Nigeria.

Abstract

The optical properties of quantum dots (QDs) in modified Möbius squared (MMS) potential are studied. To obtain the energy expressions and the wave functions, we solved the Schrödinger equation by using Nikiforov-Uvarov (NU) method. We investigated the linear, third-order nonlinear and total absorption coefficients (AC) and refractive index changes (RIC) using the density matrix. The numerical results show that the structure parameters and optical intensity have a strong influence on AC and RIC.

Keywords: Absorption coefficient; Modified Möbius squared potential; Nonlinear optical properties; Quantum dots; Refractive index.