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- Title
Investigation of the TeO 2 /GeO 2 Ratio on the Spectroscopic Properties of Eu 3+ -Doped Oxide Glasses for Optical Fiber Application.
- Authors
Lesniak, Magdalena; Zeid, Jakub; Starzyk, Bartłomiej; Kochanowicz, Marcin; Kuwik, Marta; Zmojda, Jacek; Miluski, Piotr; Baranowska, Agata; Dorosz, Jan; Pisarski, Wojciech; Pisarska, Joanna; Dorosz, Dominik
- Abstract
This study presented an analysis of the TeO2/GeO2 molar ratio in an oxide glass system. A family of melt-quenched glasses with the range of 0–35 mol% of GeO2 has been characterized by using DSC, Raman, MIR, refractive index, PLE, PL spectra, and time-resolved spectral measurements. The increase in the content of germanium oxide caused an increase in the transition temperature but a decrease in the refractive index. The photoluminescence spectra of europium ions were examined under the excitation of 465 nm, corresponding to 7F0 → 5D2 transition. The PSB (phonon sidebands) analysis was carried out to determine the phonon energy of the glass hosts. It was reported that the red (5D0 → 7F2) to orange (5D0 → 7F1) fluorescence intensity ratio for Eu3+ ions decreased from 4.49 (Te0Ge) to 3.33 (Te15Ge) and showed a constant increase from 4.58 (Te20Ge) to 4.88 (Te35Ge). These optical features were explained in structural studies, especially changes in the coordination of [4]Ge to [6]Ge. The most extended lifetime was reported for the Eu3+ doped glass with the highest content of GeO2. This glass was successfully used for the drawing of optical fiber.
- Subjects
OPTICAL glass; GLASS fibers; OPTICAL fibers; PHOTOLUMINESCENCE; REFRACTIVE index; THERMOLUMINESCENCE; TRANSITION temperature
- Publication
Materials (1996-1944), 2022, Vol 15, Issue 1, p117
- ISSN
1996-1944
- Publication type
Article
- DOI
10.3390/ma15010117