Donor impurity states in semiconductor zincblende nitride quantum systems as a source of nonlinear optical response

The optical absorption and the optical rectification coefficients associated to hydrogenic impurity interstate transitions in zincblende GaN-based nanostructures of the quantum wire type are investigated. The system is assumed to have cylindrical shape and the influence of external tuning probes such as hydrostatic pressure and static electric fields is particularly taken into account. The electron states are obtained within the effective mass approximation, via the exact diagonalization of the donor-impurity Hamiltonian with parabolic confinement. The nonlinear optical coefficients are calculated using a nonperturbative solution of the density-matrix Bloch equation. Our results show that the resonance-related features of the optical response become shifted in the frequency range of the incident radiation due to the effect of the hydrostatic pressure, the strength of the applied field and the change in the impurity center position. Copyright © 2017 American Scientific Publishers All rights reserved.

• Fecha de publicación: 2017
• Institución: Universidad de Medellín
• Repositorio: Repositorio UDEM
• OAI Identifier: oai:repository.udem.edu.co:11407/3153
• Acceso en línea: http://hdl.handle.net/11407/3153
• Palabra clave: Hydrostatic pressure; Nonlinear optics; Quantum wire; Zincblende GaN; Electric fields; Electromagnetic wave absorption; Gallium nitride; Hydraulics; Hydrostatic pressure; Light absorption; Nanowires; Nonlinear equations; Point defects; Quantum optics; Quantum theory; Semiconductor quantum wells; Semiconductor quantum wires; Wide band gap semiconductors; Zinc sulfide; Effective mass approximation; Non-linear optical coefficients; Non-perturbative solutions; Nonlinear optical response; Optical rectifications; Parabolic confinements; Static electric fields; Zinc-blende GaN; Nonlinear optics
• Rights: restrictedAccess
• License: http://purl.org/coar/access_right/c_16ec