New phospho-tellurite glasses with optimization of transition temperature and refractive index for hybrid microstructured optical fibers

Duan, Zhongchao; Tong, Hoang Tuan; Liao, Meisong; Cheng, Tonglei; Erwan, Motillon; Suzuki, Takenobu; Ohishi, Yasutake

doi:10.1016/j.optmat.2013.07.001

Cited by 21 publications

(7 citation statements)

References 19 publications

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“…Tellurite glasses combine both useful technological properties such as low melting temperatures and good thermal stability [36,37]. The phospho-tellurite glasses formed chemically stable glasses over wide compositional ranges [38,39,40,41,42]. According to the results of Rinke et al, the addition of TeO 2 to sodium phosphate glass caused the increase in the glass transition temperature from 284 to 327 °C [43].…”

Section: Resultsmentioning

confidence: 99%

Spectroscopic Properties of Erbium-Doped Oxyfluoride Phospho-Tellurite Glass and Transparent Glass-Ceramic Containing BaF2 Nanocrystals

et al. 2019

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The ErF3-doped oxyfluoride phospho-tellurite glasses in the (40-x) TeO2-10P2O5-45 (BaF2-ZnF2) -5Na2O-xErF3 system (where x = 0.25, 0.50, 0.75, 1.00, and 1.25 mol%) have been prepared by the conventional melt-quenching method. The effect of erbium trifluoride addition on thermal, structure, and spectroscopic properties of oxyfluoride phospho-tellurite precursor glass was studied by differential scanning calorimetry (DSC), Fourier-transform infrared (FTIR), and Raman spectroscopy as well as emission measurements, respectively. The DSC curves were used to investigate characteristic temperatures and thermal stability of the precursor glass doped with varying content of ErF3. FTIR and Raman spectra were introduced to characterize the evolution of structure and phonon energy of the glasses. It was found that the addition of ErF3 up to 1.25 mol% into the chemical composition of phospho-tellurite precursor glass enhanced 2.7 µm emission and upconversion. By controlled heat-treatment process of the host glass doped with the highest content of erbium trifluoride (1.25 mol%), transparent erbium-doped phospho-tellurite glass-ceramic (GC) was obtained. X-ray diffraction analysis confirmed the presence of BaF2 nanocrystals with the average 16 nm diameter in a glass matrix. Moreover, MIR, NIR, and UC emissions of the glass-ceramic were discussed in detail and compared to the spectroscopic properties of the glass doped with 1.25 mol% of ErF3 (the base glass).

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Section: Resultsmentioning

confidence: 99%

Spectroscopic Properties of Erbium-Doped Oxyfluoride Phospho-Tellurite Glass and Transparent Glass-Ceramic Containing BaF2 Nanocrystals

et al. 2019

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“…Beyond this benefit, the combination of several network formers usually offers the possibility of fine tuning physical property combinations to special technological demands. In this regard, phosphotellurites have recently emerged as very promising infrared laser host materials, − even though the improvement in stability and mechanical properties is bought at an expense of decreases in lifetimes and emission intensities. , Alkali-modified phosphotellurite glasses have also been investigated for solid electrolyte applications, and it was shown that the interaction between the TeO 2 and the P 2 O 5 network former species produces strong network former mixing effects leading to simultaneously enhanced glass transition temperatures and ionic conductivities (“positive former effect”). , …”

Section: Introductionmentioning

confidence: 99%

Network Former Mixing Effects in Heavy Metal Oxide Glasses: Structural Characterization of Lead Zinc Phosphotellurite Glasses Using NMR and EPR Spectroscopies

et al. 2018

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Network former mixing effects in Yb 3+ -doped glasses in the system [(2TeO 2 ) x (P 2 O 5 ) 1−x ] 0.6 [(PbO) 0.5 -(ZnO) 0.5 ] 0.4 have been investigated using a comprehensive strategy involving complementary NMR ( 31 P, 125 Te, 207 Pb) and EPR (of Yb 3+ probe ions) spectroscopies. Phosphate local environments and connectivities are extracted from detailed 31 P MAS NMR line shape analyses with assignments to distinct P n mTe sites supported by recoupling of homonuclear spin−spin interactions (refocused-INADEQUATE experiments). These results suggest a preference for P−O−Te over P−O−P and Te−O−Te connectivities for x < 0.5, consistent with nonlinear compositional trends of glass transition temperatures. While sharing of the network modifiers PbO and ZnO between the phosphate and the tellurite networks is close to proportional, the NMR data indicate subtle deviations favoring phosphate ligation at x > 0.6, where the anionic fraction of phosphate exceeds the expected fraction (67%) based on composition. On a local scale, nonlinear trends in 207 Pb chemical shift parameters suggest the preferred formation of a ligand environment with approximately equal numbers of phosphate and tellurite ligands near x = 0.5, which persists over a wide composition range. While electron spin echo envelope modulation (ESEEM) experiments suggest that the overall elemental distribution appears to be homogeneous on a 1 nm distance scale, the EPR lineshapes suggest significant changes (and possibly inhomogeneous distributions) of the local Yb 3+ environments.

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“…An indispensable content of Na 2 O must be introduced into the glass host to achieve an effective K + -Na + ion exchange and a reasonable melt temperature. Na 2 O acts as a glass modifier in glass system but too high concentration of Na 2 O will lead to an inferior chemical durability [49]. Generally, in order to complete the ion-exchange process in molten KNO 3 for hours the glass host must be able to sustain a good surface quality.…”

Section: Resultsmentioning

confidence: 99%

“…K + -Na + ion-exchange is one of the most frequently-used techniques to fabricate low-loss optical device that can be effectively coupled with single-mode fibers, which is mainly attributed to the facts that the refractive index selectively raised with the K + ions exchanged into the glass substrate when the glass substrate is submerged in pure molten KNO 3 , and during K + -Na + ion exchange process no concentration control of the melt is required and no subsequent metallic ion clusters are formed [39][40][41][42][43][44][45][46][47]. In the previous work, an attempt was made at fabricating waveguide devices in NMAP (Na 2 OMgO-Al 2 O 3 -P 2 O 5 ) glass substrates incorporating with trivalent rareearth ions by K + -Na + ion exchange, and after ion exchange NMAP glass substrate appears appropriate single-mode in near-infrared (NIR) region [48].…”

Section: Introductionmentioning

confidence: 99%

High-aluminum phosphate glasses for single-mode waveguide-typed red light source

Tian

Shen

Pun

et al. 2015

Journal of Non-Crystalline Solids

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New phospho-tellurite glasses with optimization of transition temperature and refractive index for hybrid microstructured optical fibers

Cited by 21 publications

References 19 publications

Spectroscopic Properties of Erbium-Doped Oxyfluoride Phospho-Tellurite Glass and Transparent Glass-Ceramic Containing BaF2 Nanocrystals

Spectroscopic Properties of Erbium-Doped Oxyfluoride Phospho-Tellurite Glass and Transparent Glass-Ceramic Containing BaF2 Nanocrystals

Network Former Mixing Effects in Heavy Metal Oxide Glasses: Structural Characterization of Lead Zinc Phosphotellurite Glasses Using NMR and EPR Spectroscopies

High-aluminum phosphate glasses for single-mode waveguide-typed red light source

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