Browsing by Author "Sari H."
Now showing items 1-12 of 12
-
Anisotropy dependence of the optical response in an impurity doped quantum dot under intense laser field
Aydin F.; Sari H.; Kasapoglu E.; Sakiroglu S.; Sokmen I. (Elsevier B.V., 2019)In the present work, we are interested in calculating anisotropy dependence of the optical response in an ellipsoidal quantum dot with a hydrogenic impurity in the presence of high-frequency intense laser field within the ... -
Binding energies of excitons in symmetric and asymmetric coupled double-quantum well structures in a magnetic field
The binding energy of excitons in the symmetric and asymmetric coupled double GaAs/Ga 1-cursive Greek chiAl cursive Greek chiAs quantum wells is calculated by using variational approach. Results have been obtained as a ... -
Exciton quantization in parabolic quantum wells
The exciton wavefunction in parabolic quantum wells is calculated using variational techniques and effective mass theory. The influences of the potential shape and of confinement on the exciton binding energies are studied. ... -
Exciton states in a quantum dot with parabolic confinement
Do?an Ü.; Sakiro?lu S.; Yildiz A.; Akgüngör K.; Epik H.; Sökmen I.; Sari H.; Ergün Y. (2011)In this study the electronic eigenstructure of an exciton in a parabolic quantum dot (QD) has been calculated with a high accuracy by using Finite element method (FEM). We have converted the coordinates of electronlight-hole ... -
Excitons in a quantum well under an electric field
The effect of an applied electric field on exciton binding energies are calculated by using variational techniques with the effective mass theory. Exact Airy functions are used for the electron and hole. Our results show ... -
Improvement in electroabsorption and the effect of the electric field in the tuneable wavelength converter
Sari H.; Kasapo?lu E.; Ergün Y.; Sökmen I. (1999)The numerical results of the study of a novel wavelength converter which can be tuned with the application of an external field are presented. For this device, exciton binding energies, radiuses and the absorption coefficient ... -
Non-linear dynamics in a graded quantum well placed in a GaAlAs p-n junction
Balkan N.; Sari H.; Schroeder A.; Ergun Y.; Sokmen I.; Roberts J. (2001)Theoretical and experimental results concerning the study of a novel wavelength converter amplifier, which can be tuned, with the amplification of an external voltage are presented. The device consists of a Ga1-xAlx As ... -
Nonlinear optical properties of a semi-exponential quantum wells: Effect of high-frequency intense laser field
Yesilgul U.; Ungan F.; Sakiroglu S.; Sari H.; Kasapoglu E.; Sökmen I. (Elsevier GmbH, 2019)In this present work, the effect of non-resonant, mono-chromatic intense laser field (ILF) on the linear and nonlinear optical properties of a semi-exponential quantum well (SEQW) is investigated theoretically within the ... -
Nonlinear optical properties of asymmetric n-type double ?-doped GaAs quantum well under intense laser field
Sari H.; Kasapoglu E.; Yesilgul U.; Sakiroglu S.; Ungan F.; Sökmen I. (Springer Heidelberg, 2017)The effect of non-resonant intense laser field on the intersubband-related optical absorption coefficient and refractive index change in the asymmetric n-type double ?-doped GaAs quantum well is theoretically investigated. ... -
Optical characterization of laser-driven double Morse quantum wells
Kasapoglu E.; Sakiroglu S.; Sari H.; Sökmen I.; Duque C.A. (Elsevier Ltd, 2019)In this study, the first-order linear, third-order nonlinear, and total absorption coefficients for the intersubband transition between the two lower-lying electronic levels in both symmetric and asymmetric double Morse ... -
The orbit center dependence of the energy levels in a multiple quantum wells under external tilted magnetic and electric fields
An analytical solution to the Schrödinger equation for a multiple quantum well system subjected to an externally applied electric field the growth direction and an externally applied tilted magnetic field are obtained and ... -
Wavelength converter/amplifier with fine tunability
Sari H.; Ergun Y.; Sokmen I.; Balkan N.; Ali A.; Mc Entee N.; Mills S.J. (IEEE, Piscataway, NJ, United States, 1998)The results of the study of a novel monolithic wavelength converter/amplifier which can be tuned, with the application of an external field are presented. The tuning range is Dl=300 angstrom about the operation wavelength, ...