Browsing Nanoteknoloji Mühendisliği Bölümü by Issue Date
Now showing items 21-40 of 82
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Combined effects of electric, magnetic, and intense terahertz laser fields on the nonlinear optical properties in GaAs/GaAlAs quantum well with exponentially confinement potential
(15.11.2021)We are presenting a theoretical investigation on the effects of applied electric, magnetic, and non-resonant intense laser field on the coefficients of intersubband linear, third-order nonlinear, and total optical ... -
Growth and characterization of PALE Si-doped AlN on sapphire substrate by MOVPE
(16.01.2022)teristics of heteroepitaxial Metal-Organic Vapor Phase Epitaxy (MOVPE) grown AlN layers on sapphire substrates. Adjustment of growth kinetics is very important to control the doping. Therefore, pulsed atomic layer epitaxy ... -
Optical and nano-mechanical characterization of c-axis oriented AlN film
(19.05.2022)This paper reports the temperature effects on the optical properties of metalorganic vapour-phase epitaxy (MOCVD) grown c-axis oriented AlN epilayer thin film studied by in-situ high-temperature spectroscopic ellipsometry. ... -
Kısa Dalgaboyu Kızılötesi (SWIR) Epikatman Geliştirilmesi Projesi
(20.03.2020)Kısa Dalgaboyu Kızılötesi (SWIR) Epikatman Geliştirilmesi Projesi -
Kısa Dalgaboyu Kızılötesi (SWIR) Epikatman Geliştirilmesi Projesi
(20.03.2020)Kısa Dalgaboyu Kızılötesi (SWIR) Epikatman Geliştirilmesi Projesi -
Nucleation layer temperature effect on AlN epitaxial layers grown by metalorganic vapour phase epitaxy
(20.09.2021)AlN samples have been grown on sapphire substrate using nucleation layers (NLs) having different growth temperatures. The growth temperature of the NL has been varied over a wide range of temperatures highlight the effects ... -
Nucleation layer temperature effect on AlN epitaxial layers grown by metalorganic vapour phase epitaxy
(20.11.2021)AlN samples have been grown on sapphire substrate using nucleation layers (NLs) having different growth temperatures. The growth temperature of the NL has been varied over a wide range of temperatures highlight the effects ... -
Nanoparticles with PDT and PTT synergistic properties working with dual NIR-light source simultaneously
(2021)A non-toxic nano system using a cleverly designed dual light can be an important treatment strategy in cancer therapy. Here, we propose a unique concept of synergistic non-toxic nanoplatform, which operates with dual ... -
Generation of Coherent Extreme Ultraviolet Radiation in an Air Gas Cell with a High Power Femtosecond Laser System
(Springer, 2021)High harmonic generation (HHG) in air medium is experimentally produced by using a state-ofthe-art high power laser system. The harmonic orders up to 35th harmonic are well observed. Optical power dependence of harmonic ... -
Generation of even and odd harmonics in the XUV region with controlling the relative delay and polarization of two-color fields
(Elsevier, 2021)We report high harmonic generation in the extreme ultraviolet (XUV) region by using two-color laser fields at the wavelengths of 800 nm and 400 nm. With a Ti: sapphire femtosecond laser at a 10 Hz repetition rate efficient ... -
Intensity-dependent nonlinear optical properties in an asymmetric Gaussian potential quantum well-modulated by external fields
(Springer, 2021)In this paper, the efects of external electric, magnetic and non-resonant intense laser felds on the nonlinear optical rectifcation (NOR), second-harmonic (SH), and third harmonic (TH) generation in a GaAs quantum well ... -
Computation of Atomic Dipole Spectra for Different Atoms by Considering Short and Long Electron Trajectories under the Intense Laser Pulse
(9TH INTERNATIONAL ADVANCED TECHNOLOGIES SYMPOSIUM, 2021)In this work, computation of the nonlinear dipole response of a single atom is performed by considering the ionization of the electron under the intense laser field. The dipole spectra for xenon (Xe) and argon (Ar) gases ... -
Effect of Ultrashort Laser Pulse Shape on the Dipole Spectrum of a Single Electron
(International Conference on Advances in Engineering, Architecture, Science and Technology (ICAEAST 2021)), 2021)In this study, the effects of ultrashort laser pulse shape for the laser-matter interaction have been considered. Three different pulse shapes, Gaussian, Super-Gaussian, and Cosine-Squared, are used to calculate the dipole ... -
Numerical Simulation of Diffraction Patterns with Different Illumination Laser Wavelength
(International Conference on Engineering Technologies (ICENTE'21), 2021)In this study, a computer simulation program generating Fresnel diffraction patterns from the apertures by using the different illumination wavelength sources has been studied. Changing the aperture-screen distance and ... -
Influence of hydrostatic pressure, temperature, and terahertz laser field on the electron-related optical responses in an asymmetric double quantum well
(Springer, 2021)In this study, the effects of hydrostatic pressure, temperature, and high-frequency intense laser field on the nonlinear optical properties of an asymmetric GaAs/AlGaAs double quantum well was theoretically investigated. ... -
Determination of Optical Properties of MOVPE-Grown InxGa1-xAs/InP Epitaxial Structures by Spectroscopic Ellipsometry
(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 ... -
The nonlinear optical rectification, second and third harmonic generation coefficients of Konwent potential quantum wells
(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 ... -
Effects of applied external fields on the nonlinear optical rectification, second, and third-harmonic generation in an asymmetrical semi exponential quantum well
(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 ... -
Nonlinear optical properties in AlxGa1-xAs/GaAs double-graded quantum wells: The effect of the structure parameter, static electric, and magnetic field
(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 ... -
Interband transitions and exciton binding energy in a Razavy quantum well: effects of external fields and Razavy potential parameters
(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 ...