Salah, A., S. Hassab‑Elnaby, and M. A. Ramadan, "Boosting the nonlinear optical absorption of graphene oxide, and gold nanorods by tailoring graphene oxide‑gold nanorods hybrids", SN Applied Sciences, vol. 5, issue 11, pp. 288, 2023.
application/pdf icongold_nanorods_graphene_oxide_sn.pdf
Helayl, S., S. Hassab-Elnaby, Y. Badr, and A. Salah, "{Nonlinear optical absorption and optical limiting of magnetic iron oxide nanomaterials}", SN Applied Sciences, vol. 5, no. 9: Springer International Publishing, pp. 229, 2023. AbstractWebsite
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Gomaa, M., A. Salah, and G. {Abdel Fattah}, "{Superior enhancement of SPR fiber optic sensor using laser sensitized dip-coated graphene gold nanocomposite probes}", Optics & Laser Technology, vol. 157, no. April 2022: Elsevier Ltd, pp. 108644, jan, 2023. AbstractWebsite
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Gomaa, M., A. Salah, and G. {Abdel Fattah}, "{Superior enhancement of SPR fiber optic sensor using laser sensitized dip-coated graphene gold nanocomposite probes}", Optics & Laser Technology, vol. 157, no. April 2022: Elsevier Ltd, pp. 108644, jan, 2023. AbstractWebsite
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Shaier, H., A. Salah, W. M Mousa, S. S Hamed, S. K. El-Mahy, I. K., and Battisha, "{Synthesis and characterization of Ho3+ and Ho3+: Yb3+ embedded silica–titania nanocomposites: structural and optical properties, Conference paper}", Egyptian Journal of Chemistry, vol. 65, pp. 941 – 948, aug, 2022. AbstractWebsite
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Shaheen, H. F., A. Salah, and G. {Abdel Fattah}, "{Determination of refractive indices of heavy metal ions solutions to evaluate their concentrations}", Egyptian Journal of Chemistry, vol. 65, pp. 321 – 330, sep, 2022. AbstractWebsite
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Salah, A., A. M. Saad, and A. A. Aboud, "Effect of Co-doping level on physical properties of ZnO thin films", Optical Materials, vol. 113, pp. 110812, 2021.
application/pdf iconEffect of Co-doping level on physical properties of ZnO thin films
Azzouz, I. M., and A. Salah, "Nonlinear optical absorption and NIR to blue conversion in highly stable polymeric dye rod", Applied Physics B, vol. 108, issue 3, pp. 469 - 474, 2012. AbstractWebsite

A simple method for preparing transparent crack-free solid polymeric matrices is presented. Different dopants may be hosted in the polymeric matrix. The method is applied to prepare Glycidyl-methacrylate polymeric rods doped with solutions of coumarin 500 laser dye (ethanol and chloroform). The solvent’s effect has appeared as a shift in the absorption and photoluminous spectral bands of the laser dye in the solid polymeric host. The prepared solid samples showed nonlinear optical response on excitation with 532 nm of nanosecond laser pulses using the open aperture z-scan technique. Each sample shows different nonlinear behavior in response to the irradiating laser beam. The theoretical fitting of the experimental data indicates that the dominant mechanism of nonlinear absorption is the two-photon absorption process. Visible amplified spontaneous emission is reported in both polymeric dye rods by NIR pumping. High photostability is reported for the samples.

Salah, A., A. Mansour, M. B. Mohamed, I. M. Azzouz, S. Elnaby, and Y. Badr, "Effects of nanoparticles size and concentration and laser power on nonlinear optical properties of Au and Au–CdSe nanocrystals", applied surface science, vol. 353, pp. 112 - 117, 2015. AbstractWebsite

Au and Au–CdSe nanoparticles (NPs) have been synthesized by organometallic pyrolysis method. Nano-crystals (NCs) structure was confirmed using high resolution transmission electron microscope (HRTEM) and X-ray diffraction (XRD). Nonlinear optical absorption is investigated by Z-scan technique using nanosecond laser pulses of second harmonic Nd:YAG. Intensity-dependence of nonlinear absorption on both nano-size and concentrations is reported. These are interesting findings which can be used to fabricate optical limiting and optical switching devices from NPs and hybrid systems.

Said, A., A. Salah, and G. A. Fattah, "Enhanced Thermo-Optical Switching of Paraffin-Wax Composite Spots under Laser Heating.", Materials, vol. 10, issue 5, pp. 525, 2017. materials-10-00525-v2.pdf
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