Browsing by Author "Sakiroglu, S."
Now showing items 21-40 of 48
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Ground state energy of excitons in quantum dot treated variationally via Hylleraas-like wavefunction
Sakiroglu, S.; Dogan, Ue.; Yildiz, A.; Akgungor, K.; Epik, H.; Ergun, Y.; Sari, H.; Sokmen, I. (IOP PUBLISHING LTD, 2009)In this work, the effects of quantum confinement on the ground state energy of a correlated electron-hole pair in a spherical and in a disc-like quantum dot have been investigated as a function of quantum dot size. Under ... -
Hydrogenic donor impurities in delta-doped cylindrical quantum dots under intense laser field
Sari, H.; Ungan, F.; Sakiroglu, S.; Yesilgul, U.; Sokmen, I. (IOP PUBLISHING LTD, 2019)A theoretical study of the effects of non-resonant intense laser field on the donor impurity binding energy in a cylindrical quantum dot with delta-doped axial potential is performed in the framework of the effective mass ... -
Hydrogenic impurities in quantum dots under intense high-frequency laser field
Yesilgul, U.; Sakiroglu, S.; Kasapoglu, E.; Sari, H.; Soekmen, I. (ELSEVIER SCIENCE BV, 2011)The effects of intense high-frequency laser field on photoionization cross-section and binding energy of shallow-donor impurities in GaAs/GaAlAs quantum dots are calculated using variational method with the effective-mass ... -
Impurity-related linear and nonlinear optical response in quantum-well wires with triangular cross section
Duque, C. A.; Mora-Ramos, M. E.; Kasapoglu, E.; Ungan, F.; Yesilgul, U.; Sakiroglu, S.; Sari, H.; Sokmen, I. (ELSEVIER SCIENCE BV, 2013)The Is-like and 2p-like donor impurity energy states are studied in a semiconductor quantum wire of equilateral triangular cross section as functions of the impurity position and the geometrical size of the structure. ... -
Impurity-related optical response in cylindrical quantum dots with a delta-doped axial potential under an intense laser field
Sari, H.; Ungan, F.; Sakiroglu, S.; Yesilgul, U.; Sokmen, I. (PERGAMON-ELSEVIER SCIENCE LTD, 2018)A theoretical study of the effects of a nonresonant intense laser field on the absorption coefficients and refractive index changes for a two-level system associated with transitions from the 1S -like impurity state to the ... -
Intense laser effects on donor impurity in a cylindrical single and vertically coupled quantum dots under combined effects of hydrostatic pressure and applied electric field
Duque, C. A.; Kasapoglu, E.; Sakiroglu, S.; Sari, H.; Sokmen, I. (ELSEVIER SCIENCE BV, 2010)Using the effective mass and parabolic band approximations and a variational procedure we have calculated the combined effects of intense laser radiation, hydrostatic pressure, and applied electric field on shallow-donor ... -
Intense laser effects on nonlinear optical absorption and optical rectification in single quantum wells under applied electric and magnetic field
Duque, C. A.; Kasapoglu, E.; Sakiroglu, S.; Sari, H.; Sokmen, I. (ELSEVIER SCIENCE BV, 2011)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. ... -
Intense laser field effects on the intersubband optical absorption and refractive index change in the delta-doped GaAs quantum wells
Sari, H.; Yesilgul, U.; Ungan, F.; Sakiroglu, S.; Kasapoglu, E.; Sokmen, I. (ELSEVIER SCIENCE BV, 2017)In this paper, we have investigated the effects of the non-resonant intense laser field on the electronic and optical properties such as linear, nonlinear and the total optical absorption coefficient and refractive index ... -
Intense Laser Field Effects on the Shallow-Donor Impurity States in Rectangular-Shaped Quantum Well Wires
Duque, C. A.; Mora-Ramos, M. E.; Yesilgul, U.; Ungan, F.; Sakiroglu, S.; Kasapoglu, E.; Sari, H.; Sokmen, I. (POLISH ACAD SCIENCES INST PHYSICS, 2014)Using the effective mass and parabolic band approximations, the binding energy of a shallow donor impurity is calculated in a GaAs-(Ga,Al)As quantum well wire of rectangular transversal section, under the combined effects ... -
Intense laser field effects on the third-harmonic generation in a quantum pseudodot system
Sakiroglu, S.; Kilic, D. Gul; Yesilgul, U.; Ungan, F.; Kasapoglu, E.; Sari, H.; Sokmen, I. (ELSEVIER SCIENCE BV, 2017)In this research, we present the effects of high-frequency intense laser field on the third-harmonic generation associated with intersubband transitions in a two-dimensional quantum pseudodot system subjected to an uniform ... -
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 ... -
Intense laser-induced electronic and optical properties in double finite oscillator potential
Sari, H.; Ungan, F.; Kasapoglu, E.; Sakiroglu, S.; Sokmen, I (TAYLOR & FRANCIS LTD, not define)In the present paper, a theoretically study of the non-resonant laser field effect on the optical response, such as nonlinear optical rectification (NOR), second (SHG) and third harmonic generation (THG) coefficients in ... -
Morse quantum well modulated by nonresonant intense laser field: Binding energy and optical absorption related to shallow donor impurities
Kasapoglu, E.; Sakiroglu, S.; Sari, H.; Sokmen, I.; Duque, C. A. (ELSEVIER GMBH, 2019)Binding energies of the lowest two s-symmetric impurity states and linear, third order nonlinear, and total optical absorption coefficients corresponding to the 1s -> 2s transitions for electrons in a Morse quantum well ... -
Nonlinear optical absorption and refractive index in GaInNAs/GaAs double quantum wells under intense laser field and applied electric field
Ungan, F.; Yesilgul, U.; Sakiroglu, S.; Kasapoglu, E.; Sari, H.; Sokmen, I. (ELSEVIER SCIENCE BV, 2013)In this present study, the combined effects of intense laser field and applied electric field on the nonlinear optical absorption and refractive index change in Ga1-xInxNyAs1-y/GaAs double quantum wells are theoretically ... -
Nonlinear optical properties of asymmetric double-graded quantum wells
Aydinoglu, H. S.; Sakiroglu, S.; Sari, H.; Ungan, F.; Sokmen, I. (TAYLOR & FRANCIS LTD, 2018)In this work, the effects of the structure parameters, such as the central barrier thickness and the aluminium concentrations x, on the linear and nonlinear intersubband optical absorption coefficients and refractive index ... -
Nonlinear optical rectification and the second and third harmonic generation in Poschl-Teller quantum well under the intense laser field
Sakiroglu, S.; Ungan, F.; Yesilgul, U.; Mora-Ramos, M. E.; Duque, C. A.; Kasapoglu, E.; Sari, H.; Sokmen, I. (ELSEVIER SCIENCE BV, 2012)In this work, the effect of a non-resonant intense laser field on the optical rectification and second and third harmonic generation in a Poschl-Teller quantum well is theoretically investigated. In this regard, the ... -
Optical properties of double quantum wires under the combined effect of spin-orbit interaction and in-plane magnetic field
Sakiroglu, S.; Gisi, B.; Karaaslan, Y.; Kasapoglu, E.; Sari, H.; Sokmen, I. (ELSEVIER SCIENCE BV, 2016)In this work, we investigate the intersubband optical absorption coefficients and refractive index changes for transitions between the lower-lying electronic levels of double quantum wires formed by a symmetric, double ... -
Optical properties of the Tietz-Hua quantum well under the applied external fields
Kasapoglu, E.; Sakiroglu, S.; Ungan, F.; Yesilgul, U.; Duque, C. A.; Sokmen, I. (ELSEVIER SCIENCE BV, 2017)In this study, the effects of the electric and magnetic fields as well as structure parameter-gamma on the total absorption coefficient, including linear and third order nonlinear absorption coefficients for the optical ... -
Optical response in a laser-driven quantum pseudodot system
Kilic, D. Gul; Sakiroglu, S.; Ungan, F.; Yesilgul, U.; Kasapoglu, E.; Sari, H.; Sokmen, I. (ELSEVIER SCIENCE BV, 2017)We investigate theoretically the intense laser-induced optical absorption coefficients and refractive index changes in a two-dimensional quantum pseudodot system under an uniform magnetic field. The effects of non-resonant, ... -
Position-dependent mass effects on the optical responses of the quantum well with Tietz-Hua potential
Sari, H.; Kasapoglu, E.; Sakiroglu, S.; Sokmen, I. (ELSEVIER GMBH, 2019)In the present study we have investigated the bound energy levels and intersubband optical transitions in the Tietz-Hua quantum well for a spatially varying effective mass distribution. The energy levels and eigenfunctions ...