Intense laser effects on nonlinear optical absorption and optical rectification in single quantum wells under applied electric and magnetic field

WOS: 000285408700084
In this work the effects of intense laser on the electron-related nonlinear optical absorption and nonlinear optical rectification in GaAs-Ga(1-x)Al(x)As quantum wells are studied under, applied electric and magnetic field. The electric field is applied along the growth direction of the quantum well whereas the magnetic field has been considered to be in-plane. The calculations were performed within the density matrix formalism with the use of the effective mass and parabolic band approximations. The intense laser effects are included through the Floquet method, by modifying the confining potential associated to the heterostructure. Results are presented for the nonlinear optical absorption, the nonlinear optical rectification and the resonant peak of these two optical processes. Several configurations of the dimensions of the quantum well, the applied electric and magnetic fields, and the incident intense laser radiation have been considered. The outcome of the calculation suggests that the nonlinear optical absorption and optical rectification are non-monotonic functions of the dimensions of the heterostructure and of the external perturbations considered in this work. (C) 2010 Elsevier B.V. All rights reserved.
Colombian Agency: COLCIENCIAS; Colombian Agency: CODI-Universidad de Antioquia (Estrategia de Sostenibilidad Grupo de Materia Condensada-UdeA); Colombian Agency: Facultad de Ciencias Exactas y Naturales-Universidad de Antioquia; Colombian Agency: Excellence Center for Novel Materials/COLCIENCIAS [043-2005]; The Scientific and Technological Research Council of Turkey (TUBITAK) [TUBITAK 109T650]
This research was partially supported by Colombian Agencies: COLCIENCIAS, CODI-Universidad de Antioquia (Estrategia de Sostenibilidad Grupo de Materia Condensada-UdeA, 2010-2011), Facultad de Ciencias Exactas y Naturales-Universidad de Antioquia (CAD-exclusive dedication project 2010-2011), and the Excellence Center for Novel Materials/COLCIENCIAS (Contract No. 043-2005). The authors are grateful to The Scientific and Technological Research Council of Turkey (TUBITAK) for a research grant (TUBITAK 109T650). CAD is grateful to Dr. Anna Kurczynska for useful discussions and the critical reading of the manuscript.