Open AccessThe Infrared Optical Properties of Al0.5In0.5Sb Alloy With Nano Coatings
Author(s) -
Saif A. Mohammed,
Saeed Naif Turki Al-Rashid
Publication year - 2019
Publication title -
xi'nan jiaotong daxue xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.308
H-Index - 21
ISSN - 0258-2724
DOI - 10.35741/issn.0258-2724.54.3.27
Subject(s) - materials science , nano , polarization (electrochemistry) , optoelectronics , refractive index , infrared , scattering , optics , composite material , physics , chemistry
In this article, the SiC/Nano GaAs and SiC/Nano InP coatings on Al0.5In0.5Sb alloy are investigated in a theoretical framework. A Special program code written by MATLAB version 10 was performed to describe the reflectivity of coatings as a function of the nano-particles sizes, refractive index, and energy gap. This program is based on the Brus model and the Characteristic Matrix Theory. The results connected with nano-particle size of 3.6 nm in multilayer coatings indicate that our designs achieve high reflectivity. Such as, with six layers, the Air/SiC/Nano GaAs/Al0.5In0.5Sb design gives the reflectivity for S-Polarization Rs=99.9% and for P-Polarization Rp=98.0% for oblique incidence of ????=45° and R=99.9% for the perpendicular incidence. Similarly, the Air/SiC/Nano InP/Al0.5In0.5Sb gives Rs=99.9% and Rp=98.5% for oblique incidence of ????=45° and R=99.8% for the perpendicular incidence. This study set out with the aim of assessing the importance of Air/SiC/Nano GaAs/Al0.5In0.5Sb composition in industrial applications as a highly reflective coating for CO2 laser resonators in the far infrared region.