Abstract
Borate incorporated novel germanium based glass system was fabricated by traditional melt-quenching technique and is used as a probe for the generation of efficient lasers. In this context, we have explored in detail the impact of B2O3 addition on optical properties of GeSbNa (germanate-antimono-sodium) glass composition. The optical absorption spectra reveal that the cut-off edge of the glasses is shifted to lower wavelengths, due to smaller number of (NBO’s) non-bridging oxygen atoms. Using optical energy band gap values, the phonon energy (EΩ) of the glass system was calculated. Extinction coefficient (k) values were found to decrease in the wavelength range of 290–335 nm which is used for low loss optical devices. The refractive index (RI) of the glasses decreased, indicating that the entire B2O3 doped GeSbNa glass system obeys the normal dispersion mechanism. In addition, the boron mixed GeSbNa glass system shows low phonon energy, making it ideal for rare earth ion hosting glass systems for laser rods and promising candidate for manufacturing optical fibers.
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