Conference Publications

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https://hdl.handle.net/20.500.14170/2005

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Browsing Conference Publications by Author "Ban A. Badr"
  • Publication
    Enhancement of Lithium Niobate nanophotonic structures via spin-coating technique for optical waveguides application
    ( 2017)
    Makram A. Fakhri
    ;
    M.Halim A. Wahid
    ;
    Ban A. Badr
    ;
    Suad M. Kadhim
    ;
    Evan T. Salim
    ;
    Uda Hashim
    ;
    Zaid T. Salim
    This work is dedicated to investigation of temperature effects in Lithium Niobate (LiNbO3) nanostructures. The LiNbO3 nanostructures were deposited on glass substrate by spin-coating technique. LiNbO3 was set down at 3000 rpm for 30 sec and annealed from 100 to 600 o C. The structures were characterized and analyzed by scanning electron microscopy (SEM) and ultra-violet visible (UV-vis) spectrophotometer. The measured results have showed that by increasing annealing temperatures, the structures start to be more crystallized and be more homogenized until the optimum arrangement was achieved. Once this was accomplished, it’s applicable for optical waveguides development. Eventually, it starts to be less crystallization and non-homogeneous. Energy gap was recorded to be at average value of 3.9 eV.
      1  9
  • Publication
    The structure and optical properties of Lithium Niobate grown on quartz for photonics application
    ( 2017)
    Makram A. Fakhri
    ;
    Mohamad Halim Abd. Wahid
    ;
    Suad M. Kadhim
    ;
    Ban A. Badr
    ;
    Evan T. Salim
    ;
    Uda Hashim
    ;
    Zaid T. Salim
    This paper focuses on the structure and optical properties of Lithium niobate (LN) deposited on quartz substrate by sol-gel method. The solution was prepared at different molarity concentration and annealed at 500 °C. The LNs were analyzed by UV-visible, X-ray diffraction (XRD) and Scanning Electron Microscope (SEM). The results show that as the molar concentration increases, the films crystallization becomes more atomically distributed and the energy band gap approaches 4 eV. Transmission spectra were taken in the wavelength range of 400-1100 nm. Hexagonal structure was observed with good atoms distribution and homogeneous crystallization. There were two phases of LNs recorded in this work.
      3  9