Linear and nonlinear optical properties of a single dopant in GaN conical quantum dot with spherical cap
A. El AouamiLaboratoire de Matière Condenssée et Sciences Interdisciplinaires (LaMCScI), Group of Optoelectronic of Semiconductors and Nanomaterials, ENSET, Mohammed V University in Rabat, Rabat, MoroccoM. BikerouinREAM Laboratory, International University of Rabat, Rabat, MoroccoKawtar FeddiEIMIS Laboratory, FST, University Abdelmalek Essadi, Tanger, MoroccoN. AghoutaneLaboratoire de Matière Condenssée et Sciences Interdisciplinaires (LaMCScI), Group of Optoelectronic of Semiconductors and Nanomaterials, ENSET, Mohammed V University in Rabat, Rabat, MoroccoM. El-YadriLaboratoire de Matière Condenssée et Sciences Interdisciplinaires (LaMCScI), Group of Optoelectronic of Semiconductors and Nanomaterials, ENSET, Mohammed V University in Rabat, Rabat, MoroccoE. FeddiLaboratoire de Matière Condenssée et Sciences Interdisciplinaires (LaMCScI), Group of Optoelectronic of Semiconductors and Nanomaterials, ENSET, Mohammed V University in Rabat, Rabat, MoroccoF. DujardinUniversité de Lorraine, LCP-A2MC, Metz, FranceA. RaduDepartment of Physics, ‘Politehnica’ University of Bucharest, Bucharest, RomaniaR.L. RestrepoUniversidad EIA, Envigado, ColombiaJ.A. VinascoGrupo de Materia Condensada-UdeA, Instituto de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Medellín, ColombiaA. L. MoralesGrupo de Materia Condensada-UdeA, Instituto de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Medellín, ColombiaC.A. DuqueGrupo de Materia Condensada-UdeA, Instituto de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Medellín, ColombiaM.E. Mora‐RamosCentro de Investigación en Ciencias-IICBA, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, México
2020en
ABI
Аннотация
The states of a single dopant centre in zinc-blende GaN-based conical quantum dots with spherical cap are theoretically investigated by analytically solving the corresponding effective mass equation taking advantage of the localisation of the ionised impurity at the cone apex. Nonlinear optical response is analysed through the calculation of the coefficients of optical absorption, relative refractive index change, and second and third harmonic generation, for the chosen set of allowed electron-donor states. The behaviour of the calculated optical quantities under changes in the geometry of the system due to variations in apical width and quantum dot radius is analysed and discussed.
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