Browsing by Author "Restrepo, R. L."
Now showing items 1-18 of 18
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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-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 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 ... -
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 ... -
Electronic states in GaAs-(Al, Ga) As eccentric quantum rings under nonresonant intense laser and magnetic fields
Vinasco, J. A.; Radu, A.; Niculescu, E.; Mora-Ramos, E.; Feddi, E.; Tulupenko, V.; Restrepo, R. L.; Kasapoglu, E.; Morales, A. L.; Duque, C. A. (NATURE PUBLISHING GROUP, 2019)The features of the electron energy spectrum in eccentric two-dimensional GaAs-AlGaAs quantum rings of circular shape are theoretically investigated taking into account the effect of externally applied magnetic and intense ... -
Intense laser field effects on a Woods-Saxon potential quantum well
Restrepo, R. L.; Morales, A. L.; Akimov, V.; Tulupenko, V.; Kasapoglu, E.; Ungan, F.; Duque, C. A. (ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD, 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 in an quantum well (QW) make with Woods Saxon potential ... -
Intense laser field-induced nonlinear optical properties of Morse quantum well
Sakiroglu, S.; Kasapoglu, E.; Restrepo, R. L.; Duque, C. A.; Soekmen, I. (WILEY-V C H VERLAG GMBH, 2017)authoren This paper investigates the effects of an intense laser field and electric field on the optical properties of quantum well represented by Morse potential. The non-resonant, high-frequency intense laser effects ... -
Intersubband optical absorption coefficients and refractive index changes in a graded quantum well under intense laser field: Effects of hydrostatic pressure, temperature and electric field
Ungan, F.; Restrepo, R. L.; Mora-Ramos, M. E.; Morales, A. L.; Duque, C. A. (ELSEVIER SCIENCE BV, 2014)The effects of hydrostatic pressure, temperature, and electric field on the optical absorption coefficients and refractive index changes associated with intersubband transition in a typical GaAs/Ga0.7Al0.3As graded quantum ... -
Linear and nonlinear optical properties in an asymmetric double quantum well under intense laser field: Effects of applied electric and magnetic fields
Yesilgul, U.; Al, E. B.; Martinez-Orozco, J. C.; Restrepo, R. L.; Mora-Ramos, M. E.; Duque, C. A.; Ungan, F.; Kasapoglu, E. (ELSEVIER SCIENCE BV, 2016)In the present study, the effects of electric and magnetic fields on the linear and third-order nonlinear optical absorption coefficients and relative change of the refractive index in asymmetric GaAs/GaAlAs double quantum ... -
Linear and nonlinear optical properties in the terahertz regime for multiple-step quantum wells under intense laser field: Electric and magnetic field effects
Restrepo, R. L.; Gonzalez-Pereira, J. P.; Kasapoglu, E.; Morales, A. L.; Duque, C. A. (ELSEVIER SCIENCE BV, 2018)We present a theoretical study on the linear and nonlinear optical properties in AlrGa1-rAs/GaAs asymmetric multiple step quantum wells (AMSQW) under the effects of a non-resonant intense laser field (ILF), electric, and ... -
Nonlinear optical rectification and second-harmonic generation in a semi-parabolic quantum well under intense laser field: Effects of electric and magnetic fields
Ungan, F.; Martinez-Orozco, J. C.; Restrepo, R. L.; Mora-Ramos, M. E.; Kasapoglu, E.; Duque, C. A. (ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD, 2015)The effects of electric and magnetic fields on the nonlinear optical rectification and second harmonic generation coefficients related with intersubband transitions in a semi-parabolic quantum well under intense laser field ... -
Optical coefficients in a semiconductor quantum ring: Electric field and donor impurity effects
Duque, C. M.; Acosta, Ruben E.; Morales, A. L.; Mora-Ramos, M. E.; Restrepo, R. L.; Ojeda, J. H.; Kasapoglu, E.; Duque, C. A. (ELSEVIER SCIENCE BV, 2016)The electron states in a two-dimensional quantum dot ring are calculated in the presence of a donor impurity atom under the effective mass and parabolic band approximations. The effect of an externally applied electric ... -
Second and third harmonic generation associated to infrared transitions in a Morse quantum well under applied electric and magnetic fields
Restrepo, R. L.; Kasapoglu, E.; Sakiroglu, S.; Ungan, F.; Morales, A. L.; Duque, C. A. (ELSEVIER SCIENCE BV, 2017)The effects of electric and magnetic fields on the second and third harmonic generation coefficients in a Morse potential quantum well are theoretically studied. The energy levels and corresponding wave functions are ...