Browsing Nanoteknoloji Mühendisliği Bölümü by Author "https://orcid.org/0000-0003-4373-6897"
Now showing items 1-9 of 9
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Determination of Optical Properties of MOVPE-Grown InxGa1-xAs/InP Epitaxial Structures by Spectroscopic Ellipsometry
Kaynar Emine; Sayrac, Muhammed; Altuntaş İsmail; Demir İlkay (Springer, 2022)InxGa1−xAs epitaxial layers with different AsH3 flows have been grown on InP substrate with the MOVPE system. It has been found that AsH3 flow variation affects the In concentration of InGaAs/InP structure because the ... -
Effects of applied external fields on the nonlinear optical rectification, second, and third-harmonic generation in an asymmetrical semi exponential quantum well
Sayrac, Muhammed (Springer, 2022)The asymmetric potential profiles are focus of interest for researchers who study semiconductor optoelectronic devices. Therefore, in this study, the effects of structure parameters (σ and V0) and applied external ... -
Influence of structural variables and external perturbations on the nonlinear optical rectification, second, and third-harmonic generation in the InP/InGaAs triple quantum well structure
Sayrac, Muhammed; Belhadj, W; Dakhlaoui H; Ungan, Fatih (Springer, 2023)The InP/InGaAs triple quantum well (TQW) structure is of significant interest to researchers studying new generations of semiconductor optoelectronic devices, as it offers valuable opportunities for controlling and enhancing ... -
Interband transitions and exciton binding energy in a Razavy quantum well: effects of external fields and Razavy potential parameters
Sayrac, Muhammed; Peter A. John; Ungan, Fatih (Springer, 2022)In this paper, we theoretically investigated the influence of externally applied fields such as high-frequency non-resonant intense laser fields, static electric and magnetic fields, as well as structure parameters, on ... -
Investigation of optical and structural properties of tin-doped copper oxide thin films prepared by the drop-cast method
Sayrac, Muhammed; Sert, Enis (Springer, 2022)Tin-doped copper oxide (Sn:CuO) thin films produced by using the sol–gel drop-cast technique were examined and the effect of Sn doping concentration on the optical properties and the energy band gap of Sn:CuO thin films ... -
Nonlinear optical properties in AlxGa1-xAs/GaAs double-graded quantum wells: The effect of the structure parameter, static electric, and magnetic field
H.S. Aydinoglu; Sayrac, Muhammed; M.E. Mora-Ramos; Ungan, Fatih (Elsevier, 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 ... -
The effect of structure parameters and static electric field on the nonlinear optical properties of triple InGaAs/GaAs quantum well
Sayrac, Muhammed; Kaynar, Emine; Ungan, Fatih (ScienceDirect, 2023)Optical properties of In x Ga 1-x As/GaAs triple QW are studied for different quantum well thicknesses and external electric fields. The effective mass approximation is used to calculate the band alignment of the structure. ... -
The nonlinear optical rectification, second and third harmonic generation coefficients of Konwent potential quantum wells
Sayrac, Muhammed; Martínez-Orozco J. C; Mora-Ramos M. E; Ungan Fatih (Springer, 2022)We have theoretically investigated the effect of structure parameters and applied external fields on the Ga1−xAlxAs/GaAs Konwent quantum well structure. Results of theoretical simulation have clarified the impact of applied ... -
Yakın Kızıl Ötesi Spektrumu Sogurucu Optik Filtre Gelistirilmesi
Sayrac, Muhammed; Ozcelik, Suleyman; Ozen, Yunus (TUBITAK, 2023)Güneş ısısını soğuran ve birçok optik uygulama için yakın kızılötesi (NIR) soğuruculuğu olan materyallerin geliştirilmesi güneş enerjisi uygulamaları yanında 1064 nm dalgaboylu lazer ışınını soğurması niteliği ile savunma ...