Browsing by Author "Mora-Ramos, M. E."
Now showing items 1-20 of 33
-
Combined effects of intense laser field and applied electric field on exciton states in GaAs quantum wells: Transition from the single to double quantum well
Duque, C. A.; Mora-Ramos, M. E.; Kasapoglu, E.; Sari, H.; Sokmen, I. (WILEY-V C H VERLAG GMBH, 2012)The effects of intense laser radiation on the exciton states in GaAs-Ga1xAlxAs quantum wells are studied with the inclusion of applied dc electric fields oriented along the growth direction of the system. The calculations ... -
Combined effects of intense laser field, electric and magnetic fields on the nonlinear optical properties of the step-like quantum well
Kasapoglu, E.; Duque, C. A.; Mora-Ramos, M. E.; Restrepo, R. L.; Ungan, F.; Yesilgul, U.; Sari, H.; Sokmen, I. (ELSEVIER SCIENCE SA, 2015)In the present work, the effects of the intense laser field on total optical absorption coefficient (the linear and third-order nonlinear) and total refractive index change for transition between two lower-lying electronic ... -
Donor impurity states and related optical responses in triangular quantum dots under applied electric field
Kasapoglu, E.; Ungan, F.; Sari, H.; Sokmen, I.; Mora-Ramos, M. E.; Duque, C. A. (ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD, 2014)The linear and nonlinear coefficients for the optical absorption and relative refractive index change associated with transitions between donor impurity states in a two-dimensional quantum dot of triangular shape under ... -
Donor Impurity-Related Optical Absorption in GaAs Elliptic-Shaped Quantum Dots
Londono, M. A.; Restrepo, R. L.; Ojeda, J. H.; Huynh Vinh Phuc; Mora-Ramos, M. E.; Kasapoglu, E.; Morales, A. L.; Duque, C. A. (HINDAWI LTD, 2017)The conduction band and electron-donor impurity states in elliptic-shaped GaAs quantum dots under the effect of an externally applied electric field are calculated within the effective mass and adiabatic approximations ... -
Effect of applied electric field on the nonlinear optical properties of modulation-doped GaAs/AlxGa1-x As double quantum well
Ungan, F.; Martinez-Orozco, J. C.; Restrepo, R. L.; Mora-Ramos, M. E.; Duque, C. A. (ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD, 2019)In the present study, the effects of varying doping concentration and applied electric field on the intersubband-related optical absorption and relative refractive index change coefficients in modulation-doped GaAs/AlxGa1-x ... -
Effect of applied external fields on the nonlinear optical properties of a Woods-Saxon potential quantum well
Ungan, F.; Mora-Ramos, M. E.; Yesilgul, U.; Sari, H.; Sokmen, I (ELSEVIER SCIENCE BV, 2019)In this present work a detailed theoretical study on the influence of the static electric, magnetic, and nonresonant intense THz laser fields on the nonlinear optical properties such as nonlinear optical rectification (NOR) ... -
Effect of intense high-frequency laser field on the linear and nonlinear intersubband optical absorption coefficients and refractive index changes in a parabolic quantum well under the applied electric field
Yesilgul, U.; Ungan, F.; Sakiroglu, S.; Mora-Ramos, M. E.; Duque, C. A.; Kasapoglu, E.; Sari, H.; Sokmen, I. (ELSEVIER SCIENCE BV, 2014)The effects of the intense high-frequency laser field on the optical absorption coefficients and the refractive index changes in a GaAs/GaAlAs parabolic quantum well under the applied electric field have been investigated ... -
Effect of the magnetic field on the nonlinear optical rectification and second and third harmonic generation in double delta-doped GaAs quantum wells
Martinez-Orozco, J. C.; Rojas-Briseno, J. G.; Rodriguez-Magdaleno, K. A.; Rodriguez-Vargas, I.; Mora-Ramos, M. E.; Restrepo, R. L.; Ungan, F.; Kasapoglu, E.; Duque, C. A. (ELSEVIER SCIENCE BV, 2017)In this paper we are reporting the computation for the Nonlinear Optical Rectification (NOR) and the Second and Third Harmonic Generation (SHG and THG) related with electronic states of asymmetric double Si-d-doped quantum ... -
Effects of electromagnetic fields on the nonlinear optical properties of CrossMaric asymmetric double quantum well under intense laser field
Yesilgul, U.; Sari, H.; Ungan, F.; Martinez-Orozco, J. C.; Restrepo, R. L.; Mora-Ramos, M. E.; Duque, C. A.; Sokmen, I. (ELSEVIER SCIENCE BV, 2017)In this study, the effects of electric and magnetic fields on the optical rectification and second and third harmonic generation in asymmetric double quantum well under the intense non-resonant laser field is theoretically ... -
Effects of Geometry on the Electronic Properties of Semiconductor Elliptical Quantum Rings
Vinasco, J. A.; Radu, A.; Kasapoglu, E.; Restrepo, R. L.; Morales, A. L.; Feddi, E.; Mora-Ramos, M. E.; Duque, C. A. (NATURE PUBLISHING GROUP, 2018)The electronic states in GaAs-AlxGa1-xAs elliptically-shaped quantum rings are theoretically investigated through the numerical solution of the effective mass band equation via the finite element method. The results are ... -
The effects of intense laser field and applied electric and magnetic fields on optical properties of an asymmetric quantum well
Restrepo, R. L.; Ungan, F.; Kasapoglu, E.; Mora-Ramos, M. E.; Morales, A. L.; Duque, C. A. (ELSEVIER SCIENCE BV, 2015)This paper presents the results of the theoretical study of the effects of non resonant intense laser field and electric and magnetic fields on the optical properties (the linear and third order nonlinear refractive index ... -
The effects of the electric and intense laser field on the binding energies of donor impurity states (1s and 2p(+/-)) and optical absorption between the related states in an asymmetric parabolic quantum well
Kasapoglu, E.; Sakiroglu, S.; Sokmen, I.; Restrepo, R. L.; Mora-Ramos, M. E.; Duque, C. A. (ELSEVIER SCIENCE BV, 2016)We have calculated the effects of electric and intense laser fields on the binding energies of the ground and some excited states of conduction electrons coupled to shallow donor impurities as well as the total optical ... -
The effects of the electric and magnetic fields on the nonlinear optical properties in the step-like asymmetric quantum well
Kasapoglu, E.; Ungan, F.; Duque, C. A.; Yesilgul, U.; Mora-Ramos, M. E.; Sari, H.; Sokmen, I. (ELSEVIER SCIENCE BV, 2014)In the present work, total optical absorption coefficient (the linear and third-order nonlinear) and total refractive index change for transition between two first lower-lying electronic levels in the step-like GaAs/Ga1-xAlxAs ... -
The effects of the intense laser field on the nonlinear optical properties of a cylindrical Ga1-xAlxAs/GaAs quantum dot under applied electric field
Kasapoglu, E.; Duque, C. A.; Mora-Ramos, M. E.; Sokmen, I. (ELSEVIER SCIENCE BV, 2015)In the present work, the effects of the intense laser field on total optical absorption coefficient (the linear and third-order nonlinear) and total refractive index change (the linear and third-order nonlinear) for ... -
Electron Raman scattering in a double quantum well tuned by an external nonresonant intense laser field
Tiutiunnyk, A.; Mora-Ramos, M. E.; Morales, A. L.; Duque, C. M.; Restrepo, R. L.; Ungan, F.; Martinez-Orozco, J. C.; Kasapoglu, E.; Duque, C. A. (ELSEVIER SCIENCE BV, 2017)In this work we shall present a study of inelastic light scattering involving inter-subband electron transitions in coupled GaAs-(Ga,AI)As quantum wells. Calculations include the electron related Raman differential cross ... -
Electron-related nonlinearities in GaAs-Ga1-xAlxAs double quantum wells under the effects of intense laser field and applied electric field
Mora-Ramos, M. E.; Duque, C. A.; Kasapoglu, E.; Sari, H.; Sokmen, I. (ELSEVIER SCIENCE BV, 2013)The combined effects of intense laser radiation and applied electric fields on the intersubband-related linear and nonlinear optical properties in GaAs-based quantum wells are discussed. It is shown that for asymmetric ... -
Electron-related optical responses in triangular quantum dots
Tiutiunnyk, A.; Tulupenko, Y.; Mora-Ramos, M. E.; Kasapoglu, E.; Ungan, F.; Sari, H.; Sokmen, I.; Duque, C. A. (ELSEVIER SCIENCE BV, 2014)The linear and nonlinear coefficients for the optical absorption and relative refractive index change associated with intersubband transitions of electrons in the conduction band of a two-dimensional quantum dot of triangular ... -
Electron-related optical responses in triple delta-doped quantum wells
Ungan, F.; Mora-Ramos, M. E.; Kasapoglu, E.; Sari, H.; Sokmen, I. (TAYLOR & FRANCIS LTD, 2019)A detailed theoretical study on the electron-related optical responses in triple delta-doped GaAs quantum wells in the presence of non-resonant, monochromatic intense laser field is presented. For this purpose, we first ... -
Electronic structure and optical properties of triangular GaAs/AlGaAs quantum dots: Exciton and impurity states
Tiutiunnyk, A.; Akimov, V.; Tulupenko, V.; Mora-Ramos, M. E.; Kasapoglu, E.; Ungan, F.; Sokmen, I.; Morales, A. L.; Duque, C. A. (ELSEVIER SCIENCE BV, 2016)Electronic structure and optical properties in equilateral triangular GaAs/Al0.3Ga0.7As quantum dots are studied extensively. The effects of donor and acceptor impurity atoms positioned in the orthocenter of the triangle, ... -
Hydrostatic Pressure and Temperature Effect on the Electron-Related Optical Responses in Symmetric and Asymmetric n-Type Double Delta-Doped GaAs Quantum Well Under Terahertz Laser Field
Ungan, F.; Mora-Ramos, M. E.; Sari, H.; Sokmen, I. (SPRINGER, 2019)The effects of non-resonant intense laser fields on the intersubband-related light absorption and relative refractive index change coefficients in symmetric and asymmetric n-type double -doped GaAs quantum wells are ...