In this work, highly-pure titanium dioxide nanoparticles produced by dc magnetron sputtering technique were embedded in organometallic complex solutions such as Baq2 or Znq2 to form random gain media. The structural characteristics of the TiO2 nanoparticles were determined to confirm their high structural purity. The spectroscopic characteristics, mainly photoluminescence and fluorescence, of the complex solutions containing the nanoparticles were determined and studied. These media were compared to two of the most common laser dyes (Rhodamine b and Rhodamine 6G) to determine the feasibility to use them to produce random laser.

This work prepared organometallic complexes from the 8-hydroxyquinoline ligand linked to metal ions such as Ba2+, Ca2+, and Zn2+. The effects of metal ion type and adding nanoparticles to the complex solution on the absorption and photoluminescence characteristics of the prepared complexes were introduced. These nanoparticles were added to the prepared complex solutions to act as scattering centers to form random gain media with emission in the visible region of the electromagnetic spectrum. The random gain media made from the Znq2 complex with nanoparticles showed the best characteristics with good chemical and spectroscopic stabilities, high reliability, and reproducibility in addition to the low production cost and reasonably simple requirements.

In this work, some organometallic complexes with featured characteristics were prepared by linking metallic ions such as Al3+, Zn2+ and Ba2+ to the 8-hydroxyquinoline ligand. Two different solvents, dimethylformamide (DMF) and dimethylsulphoxide (DMSO), were used to form the solutions of the prepared complexes. The spectral characteristics in the UV, visible and IR regions, and physiochemical characteristics such as melting point, electrical conductivity, solubility and gas chromatography and mass spectrometry, of the prepared complexes were studied. Also, the effect of solvent type on the spectral characteristics of these complexes were determined. The prepared complexes and their spectral and physiochemical characteristics were assessed to be used as laser dyes.