Browsing Fizik Bölümü by Issue Date
Now showing items 61-80 of 195
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Vcsel Tabanlı Yüksek Güçlü Yarıiletken Lazerler TÜBİTAK-1003
(2021)Proje Özeti VCSEL’ler (vertical-cavity surface-emitting laser, düşey- kovuklu yüzey-ışımalı lazer) yirmi yılı aşkın bir süredir giderek büyüyen veri iletişimi (datacom) alanının anahtar parçalarından birisidir. Bunun yanında ... -
BOYUT MODÜLASYONUNUN KÜRESEL BİR ÇEKİRDEK/KABUK/KABUK YARIİLETKEN KUANTUM NOKTASINDAKİ ELEKTRONUN OPTİK ÖZELLİKLERİ ÜZERİNDEKİ ETKİSİ
(2021)In this study, the linear, nonlinear and total optical absorption coefficients as well as the relative refractive index changes of the electron confined in the semiconductor 𝐺���𝑎���𝐴���𝑠���(𝑐���𝑜���𝑟���𝑒���)/𝐴 ... -
Effect of size modulation and donor position on intersubbands refractive index changes of a donor within a spherical core/shell/shell semiconductor quantum dot
(2021/9/24)In the current study, linear, nonlinear and total relative refractive index changes of a single shallow hydrogenic donor atom confined in semiconductor core/shell/shell quantum dot heterostructure are investigated in detail ... -
Effects of Intense Laser Field on Electronic and Optical Properties of Harmonic and Variable Degree Anharmonic Oscillators
(2022)In this paper, we calculated the electronic and optical properties of the harmonic oscillator and single and double anharmonic oscillators, including higher-order anharmonic terms such as the quartic and sextic under the ... -
Optical Properties of Cylindrical Quantum Dots with Hyperbolic-Type Axial Potential under Applied Electric Field
(2022)In this paper, we have researched the electronic and optical properties of cylindrical quantum dot structures by selecting four different hyperbolic-type potentials in the axial direction under an axially-applied electric ... -
Shallow‑donor impurity effects on the far infrared electron–electron optical absorption coefficient in single and core/shell spherical quantum dots with Konwent‑like confinement potential
(2022)In this study, the electronic and optical properties of single or core/shell quantum dots, which are formed depending on the parameters in the selected Konwent potential, are investigated. Namely, the effects of the size ... -
Photoionization cross section of a D+ 2 complex in quantum dots: the role of donor atoms configuration
(2022)This study reports a theoretical investigation on the electronic spectrum and the photoionization cross section of a singly ionized double donor complex D+ 2 confined in a two-dimensional quantum dot with Gaussian ... -
Effect of position-dependent effective mass on donor impurity- and exciton-related electronic and optical properties of 2D Gaussian quantum dots
(2022)Using the compact density matrix scheme and the effective mass approximation, we study the influence of positiondependent electron and heavy-hole mass distributions on the impurity-related electronic properties, excitonic ... -
Electronic and optical properties of a D+ 2 complex in two-dimensional quantum dots with Gaussian confinement potential
(2022)Using the two-dimensional diagonalization method and the effective mass approximation, the electronic structure and intersubband optical absorption of the singly ionized double donor complex confined in a Gaussian quantum ... -
Theoretical Study of the Exciton Binding Energy and Exciton Absorption in Different Hyperbolic-Type QuantumWells under Applied Electric, Magnetic, and Intense Laser Fields
(2022)In this study, we investigated the exciton binding energy and interband transition between the electron and heavy-hole for the single and double quantum wells which have different hyperbolictype potential functions subject ... -
Dynamics of nonlinear optical rectification, second, and third harmonic generation in asymmetric triangular double quantum wells due to static electric and magnetic fields
(2022)In this study, we present a theoretical simulation of the impact of applied external electric and magnetic fields on the nonlinear optical rectification (NOR), second harmonic generation (SHG), and third harmonic generation ... -
Electronic Transport Properties in GaAs/AlGaAs and InSe/InP Finite Superlattices under the Effect of a Non-Resonant Intense Laser Field and Considering Geometric Modifications
(2022)In this work, a finite periodic superlattice is studied, analyzing the probability of electronic transmission for two types of semiconductor heterostructures, GaAs/AlGaAs and InSe/InP. The changes in the maxima of the ... -
First Study on the Electronic and Donor Atom Properties of the Ultra-Thin Nanoflakes Quantum Dots
(2022)Nanoflakes ultra-thin quantum dots are theoretically studied as innovative nanomaterials delivering outstanding results in various high fields. In this work, we investigated the surface properties of an electron confined ... -
The effects of external fields on double GaAs/AlGaAs quantum well with Manning potential
(2022)In this paper, we calculated the electronic and optical absorption coefficient of the Manning-like double quantum well under the external applied electric and magnetic fields. To calculate the linear and thirdorder nonlinear ... -
Influence of external fields on the exciton binding energy and interband absorption in a double inverse parabolic quantum well
(2022)Ground-state binding energy and optical absorption coefficient of exciton in a symmetric double inverse parabolic quantum well system in the presence of external electric and magnetic fields are investigated theoretically. ... -
Nonlinear optical properties in AlxGa1-xAs/GaAs double-graded quantum wells: The effect of the structure parameter, static electric, and magnetic field
(2022)We present a theoretical simulation of the impact of applied external electric and magnetic fields, as well as of the change in structure parameters, on the nonlinear optical rectification (NOR), second harmonic generation ... -
Strain effect on the intraband absorption coefficient for spherical CdSe/CdS/ZnSe core–shell–shell quantum dots
(2022)In this work, we theoretically calculated the intraband absorption coefficient (IAC) between the 1𝑠��� and 1𝑝��� conduction band states for a spherical core/shell/shell quantum dot (CSS-QD) as function of inner and outer ... -
The nonlinear optical properties of GaAs/GaAlAs triple quantum well: Role of the electromagnetic fields and structural parameters
(2022)Being relevant to the field of device applications, multiple semiconductor quantum wells are systems that exhibit remarkable optical and electronic properties. These can be properly tuned by suitably modifying the ... -
Dynamics of nonlinear optical rectification, second, and third harmonic generation in asymmetric triangular double quantum wells due to static electric and magnetic fields
(2022)In this study, we present a theoretical simulation of the impact of applied external electric and magnetic fields on the nonlinear optical rectification (NOR), second harmonic generation (SHG), and third harmonic generation ...