Browsing by Author "Sakiroglu, S."
Now showing items 1-20 of 48
-
Binding energy and optical absorption of donor impurity states in "12-6" tuned GaAs/GaAlAs double quantum well under the external fields
Kasapoglu, E.; Sakiroglu, S.; Sari, H.; Sokmen, I; Duque, C. A. (ELSEVIER SCIENCE BV, 2019)We have investigated the binding energies of the s-symmetric ground and first excited shallow donor impurity states and the total 1s -> 2s absorption coefficient, including the first and third order corrections, in "12-6" ... -
Binding energy of donor impurity states and optical absorption in the Tietz-Hua quantum well under an applied electric field
Al, E. B.; Kasapoglu, E.; Sakiroglu, S.; Duque, C. A.; Sokmen, I. (ELSEVIER SCIENCE BV, 2018)For a quantum well which has the Tietz-Hua potential, the ground and some excited donor impurity binding energies and the total absorption coefficients, including linear and third order nonlinear terms for the transitions ... -
Combined effects of the intense laser field, electric and magnetic fields on the optical properties of n-type double delta-doped GaAs quantum well
Sari, H.; Kasapoglu, E.; Sakiroglu, S.; Yesilgul, U.; Ungan, F.; Sokmen, I. (ELSEVIER SCIENCE BV, 2017)In the present work, the effects of the non-resonant intense laser field, electric and magnetic fields on the optical properties, such as linear, third order nonlinear and the total optical absorption coefficient and ... -
The effect of hydrostatic pressure on subband structure and optical transitions in modulation-doped quantum well
Ungan, F.; Yesilgul, U.; Sakiroglu, S.; Kasapoglu, E.; Sari, H.; Sokmen, I. (ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD, 2011)Within the framework of effective-mass approximation, we have calculated theoretically the effects of hydrostatic pressure and doping concentration on subband structure and optical transitions in modulation-doped ... -
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 ... -
The effect of nitrogen on the diamagnetic susceptibility of a donor in GaxIn1-xNyAs1-y/GaAs quantum well under the magnetic field
Kilicarslan, E.; Sakiroglu, S.; Kasapoglu, E.; Sari, H.; Sokmen, I. (ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD, 2010)The binding energy and diamagnetic susceptibility of a hydrogenic donor in a GaxIn1-xNyAs1-y/GaAs quantum well has investigated in the presence of the magnetic field by using a trial wave function in the framework of the ... -
Effects of an in-plane magnetic field on the energy dispersion, spin texturing and conductance of double quantum wires
Gisi, B.; Karaaslan, Y.; Sakiroglu, S.; Kasapoglu, E.; Sari, H.; Sokmen, I. (ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD, 2016)We investigate the electronic structure, spin and transport properties of double quantum wires formed by a symmetric, double quartic-well potential subjected to an in-plane magnetic field by taking into account Rashba and ... -
Effects of an intense, high-frequency laser field on the intersubband transitions and impurity binding energy in semiconductor quantum wells
Ungan, F.; Yesilgul, U.; Sakiroglu, S.; Kasapoglu, E.; Sari, H.; Sokmen, I. (ELSEVIER SCIENCE BV, 2010)Within the framework of effective-mass approximation, using a variational method, the effect of high-frequency laser field on intersubband transitions and the binding energy of shallow-donor impurities in a semiconductor ... -
Effects of applied electromagnetic fields on the optical transitions in a V-shaped quantum well
Yesilgul, U.; Ungan, F.; Sakiroglu, S.; Kasapoglu, E.; Sari, H.; Sokmen, I. (ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD, 2013)In this study, the interband optical transitions and the binding energy of an exciton in a GaAs/Ga1-xAlxAs V-shaped quantum well (VQW) under the electric and magnetic fields are calculated. The calculations were performed ... -
Effects of indium and nitrogen mole concentrations on the optical properties in a GaInNas/GaAs quantum well under the intense laser field
Ungan, F.; Sakiroglu, S.; Yesilgul, U.; Erol, A.; Kasapoglu, E.; Sari, H.; Sokmen, I. (ELSEVIER SCIENCE BV, 2013)The effect of indium and nitrogen mole concentrations on the nonlinear optical properties in a Ga1-xInxNyAs1-y/GaAs single quantum well under the intense laser field is theoretically studied within the effective mass ... -
The effects of intense laser field on optical responses of n-type delta doped GaAs quantum well under applied electric and magnetic fields
Sari, H.; Ungan, F.; Sakiroglu, S.; Yesilgul, U.; Sokmen, I (ELSEVIER GMBH, URBAN & FISCHER VERLAG, 2018)This work presents the results of the theoretical study of the effects of non-resonant intense laser field, electric and magnetic fields on optical responses of GaAs n-type delta-doped quantum well associated to the electron ... -
The effects of temperature and hydrostatic pressure on the photoionization cross-section and binding energy of impurities in quantum-well wires
Yesilgul, U.; Sakiroglu, S.; Kasapoglu, E.; Sari, H.; Soekmen, I. (ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD, 2010)Using a variational approach, we have calculated the donor impurity related photoionization cross-section and impurity binding in GaAs/GaAlAs quantum-well wires under different temperature and hydrostatic pressure conditions. ... -
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 intense laser field on bound states in GaxIn1-x NyAs1-y/GaAs single quantum well
Ungan, F.; Kasapoglu, E.; Duque, C. A.; Yesilgul, U.; Sakiroglu, S.; Sokmen, I. (SPRINGER, 2011)We have investigated the effects of the intense laser field and nitrogen concentration on bound state energy levels in Ga (x) In1- (x) N (y) As1- (y) N/GaAs quantum well. The results show that both intense laser field and ... -
The effects of the intense laser field on donor impurities in a cylindrical GaxIn1-xNyAs1-y/GaAs quantum dot under the electric field
Kasapoglu, E.; Duque, C. A.; Sakiroglu, S.; Sari, H.; Sokmen, I. (ELSEVIER SCIENCE BV, 2011)For different nitrogen and indium concentrations, intense laser field (ILF) effect on donor impurity binding energy in a cylindrical GaxIn1-xNyAs1-y/GaAs quantum dot (QD) has been studied. Results show that ILF creates an ... -
The effects of the magnetic field and dielectric screening on the diamagnetic susceptibility of a donor in a quantum well with anisotropic effective mass
Kilicarslan, E.; Sakiroglu, S.; Koksal, M.; Sari, H.; Sokmen, I. (ELSEVIER SCIENCE BV, 2010)The diamagnetic susceptibility and the binding energy of a hydrogenic donor in a quantum well with different mass anisotropy parameters gamma=m(perpendicular to)/m(parallel to) are investigated in the presence of a magnetic ... -
Electric and magnetic field modulated energy dispersion, conductivity and optical response in double quantum wire with spin-orbit interactions
Karaaslan, Y.; Gisi, B.; Sakiroglu, S.; Kasapoglu, E.; Sari, H.; Sokmen, I. (ELSEVIER SCIENCE BV, 2018)We study the influence of electric field on the electronic energy band structure, zero-temperature ballistic conductivity and optical properties of double quantum wire. System described by double well anharmonic confinement ... -
Electron-related optical responses in Gaussian potential quantum wells: Role of intense laser field
Sari, H.; Ungan, F.; Sakiroglu, S.; Yesilgul, U.; Kasapoglu, E.; Sokmen, I. (ELSEVIER SCIENCE BV, 2018)A theoretical study of the effects of non-resonant intense laser field on the optical response in a Gaussian potential quantum well is performed in the framework of the effective mass approximation. The obtained results ... -
Electronic band structure of GaAs/AlxGa1-xAs superlattice in an intense laser field
Sakiroglu, S.; Yesilgul, U.; Ungan, F.; Duque, C. A.; Kasapoglu, E.; Sari, H.; Sokmen, I. (ELSEVIER SCIENCE BV, 2012)We perform theoretical calculations for the band structure of semiconductor superlattice under intense high-frequency laser field. In the frame of the non-perturbative approach, the laser effects are included via laser-dressed ... -
Fourier transform technique in variational treatment of two-electron parabolic quantum dot
Sakiroglu, S.; Yildiz, A.; Dogan, Ue.; Akgungor, K.; Epik, H.; Ergun, Y.; Sari, H.; Sokmen, I. (IOP PUBLISHING LTD, 2009)In this work, we propose an efficient method of reducing the computational effort of variational calculation with a Hylleraas-like trial wavefunction. The method consists of introducing integra transforms for the terms as ...
