INVESTIGATION OF HOLMIUM-DOPED PHOSPHO-TELLURITE GLASS SYSTEMS FOR LASERS
DOI:
https://doi.org/10.55766/sujst5925Keywords:
Holmium, Judd-Ofelt, Luminescence, Phospho-Tellurite GlassesAbstract
This study explores the properties of Holmium-doped phospho-tellurite glass, with varying concentrations of Ho2O3, measuring the physical, structural, optical, and luminescence characteristics of the glass. Physical properties including density, molar volume, and refractive index are measured and analyzed. XRD is used to confirm the amorphous nature of the glass for structural properties, while FTIR is used to confirm bonding in the glass system. Absorption and luminescence are measured within the wavelength range of 200 - 2000 nm and 400 - 750 nm, respectively. The obtained spectra were analyzed using the Judd-Ofelt theory, which provides insights into the energy levels of Ho3+ ion doped in the phospho-tellurite glass matrix. Notably, our analysis of the spectral line corresponding to the 5F4 → 5I8 transition (~ 529.0 nm), showcases a highly stimulated emission cross-section. The calculated oscillator strength, Judd-Ofelt intensity parameters, branching ratio, and other parameters further elucidate the potential of Ho3+ ion doped phospho-tellurite glass for efficient laser emission in this glass system.
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