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<p>The current study investigates the impact of ZnO substitution (0–25&#xa0;mol%) on the Li<sub>2</sub>O-Na<sub>2</sub>O-SiO<sub>2</sub> glass system synthesized via melt-quenching. The XRD analysis confirmed an amorphous nature, while Raman spectroscopy revealed a transition from non-bridging oxygens to Q<sup>3</sup> and Q<sup>4</sup> bridging structures, enhancing network rigidity. The physical analysis showed a density increase from 2.557 to 2.975&#xa0;g/cm<sup>3</sup> and a rise in molar volume from 20.618 to 22.049 cm<sup>3</sup>/mol. The optical measurements unveiled a redshift in the absorption edge, with the optical band gap narrowing from 3.849 to 3.339&#xa0;eV and Urbach energy rising from 0.323 to 0.415&#xa0;eV. The linear refractive index increased from 2.200 to 2.312, while third-order non-linear susceptibility and non-linear refractive index reached values up to 3.288 × 10<sup>− 15</sup> esu and 5.634 × 10<sup>− 14</sup> esu, respectively. These properties make the prepared glass system highly suitable for specific advanced applications, where the high non-linear response facilitates optical switching and high-speed optoelectronic devices, while the increased density and reduced penetration depth optimize it for transparent radiation shielding and as a stable host medium for laser-active ions.</p>

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Influence of ZnO content on physical, structure and optical efficiency of Li2O-Na2O-SiO2 glasses for advanced optical applications

  • 期刊论文

  • 发表日期：

    2026年5月27日

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  • Marwa A. El-Sayed,
  • Hany A. Abo-Mosallam,
  • Dmitriy V. Dyubo,
  • Ilya Zavidovskiy,
  • Samia E. Ibrahim

摘要

The current study investigates the impact of ZnO substitution (0–25 mol%) on the Li2O-Na2O-SiO2 glass system synthesized via melt-quenching. The XRD analysis confirmed an amorphous nature, while Raman spectroscopy revealed a transition from non-bridging oxygens to Q3 and Q4 bridging structures, enhancing network rigidity. The physical analysis showed a density increase from 2.557 to 2.975 g/cm3 and a rise in molar volume from 20.618 to 22.049 cm3/mol. The optical measurements unveiled a redshift in the absorption edge, with the optical band gap narrowing from 3.849 to 3.339 eV and Urbach energy rising from 0.323 to 0.415 eV. The linear refractive index increased from 2.200 to 2.312, while third-order non-linear susceptibility and non-linear refractive index reached values up to 3.288 × 10− 15 esu and 5.634 × 10− 14 esu, respectively. These properties make the prepared glass system highly suitable for specific advanced applications, where the high non-linear response facilitates optical switching and high-speed optoelectronic devices, while the increased density and reduced penetration depth optimize it for transparent radiation shielding and as a stable host medium for laser-active ions.