Observation of efficient Er3+:4I11/2→4I13/2 transition in highly Er3+ doped germanosilicate glass

Ren, Guangyu; Cao, Wenqian; Lei, Ruoshan; Wang, Huanping; Xu, Shiqing; Yang, Hua; Huang, Feifei

doi:10.1016/j.ceramint.2018.06.124

Cited by 10 publications

(2 citation statements)

References 28 publications

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“…The last aspect is the coordination number of metal ions, which is an important structural feature of glasses. The coordination number of La 3+ is 9 [29] , which is higher than that of general Ge 4+ (4 or 6) [30] . A denser glass network structure can be obtained by a higher coordination number so that the density increases with an increase in La 3+ and decrease in Ge 2+ .…”

Section: Glass Density Molar Volume and Oxygen Ion Polarizabilitymentioning

confidence: 74%

Structural, Thermal, and Optical Properties of GeO₂-La₂O₃-TiO₂ Glasses

Jiabao¹,

Minghui²,

Huaiyu³

et al. 2023

Journal of Inorganic Materials

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La2O3-TiO2 glasses show promising application prospect in fields of lenses, optical windows, and optical communication, owing to high refractive index and excellent performance. However, this glass cannot be prepared into large size because of its weak glass forming ability. This seriously limits the application of this new glass. In this study, introducing the network former GeO2, the glass forming ability can be effectively improved. This enables large-sized GeO2-La2O3-TiO2 (GLT) glass to be prepared using conventional methods. Differential thermal analysis shows that GLT glasses have high glass transition temperature and strong resistance to precipitation, with Tg and ΔT (ΔT =Tc-onset-Tg) greater than 833 and 209 ℃, respectively. The refractive index is up to 2.06. The transmittance can reach 78% in the visible and near-infrared wavelength bands. The influence of titanium contents on the structure, thermal, and optical property has been researched. The results show that the glass forming ability and thermal stability can be weakened by increasing the content of TiO2. The molar volume and oxygen electron polarizability exhibit the same variation trends as the refractive index of the samples. This glass is important for developing new devices with high performance, light weight, and small size.

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Section: Glass Density Molar Volume and Oxygen Ion Polarizabilitymentioning

confidence: 74%

Structural, Thermal, and Optical Properties of GeO₂-La₂O₃-TiO₂ Glasses

Jiabao¹,

Minghui²,

Huaiyu³

et al. 2023

Journal of Inorganic Materials

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“…According to the fluorescence emission spectrum and Fuchtbauer–Ladenburg theory, the fluorescence emission cross section (σemi) can be calculated by the following equations: 40 σemi(λ)=λ4·Arad8πcn2×λI(λ)∫λI(λ)dλ,where λ denotes the wavelength and Arad is the radiative transition probability of the Er3+:S43/2→F49/2 transitions, I(λ) is the relative intensity of fluorescence emission, n is the refractive index of the glass, and c is the speed of light in vacuum. Based on the emission cross-section, the corresponding absorption cross-section (σabs) can be obtained using McCumber theory 41 …”

Section: Resultsmentioning

confidence: 99%

Ag nanoparticles enhanced 3.1 μm mid-infrared emission of Er3+/Bi+ co-doped oxyfluoride tellurite glasses

Wu,

Zhang

2024

Opt. Eng.

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The Er 3þ ∕Bi þ ∕Ag nanoparticles (NPs) triple-doped oxyfluoride tellurite glasses were prepared by melt-quenching method, showing an intense 3.1 μm mid-infrared fluorescence emission under 980 nm laser diode pumping. The as-prepared tellurite glass samples exhibit good thermal stability and resistance to crystallization based on X-ray diffraction and differential scanning calorimetry measurements. After an introduction of AgNPs into the tellurite glass matrix, a broadband fluorescence emission at 3.1 μm is detected, in which the full width at half maximum (FWHM) is 181 nm. Moreover, the 3.1 μm fluorescence intensity in this Er 3þ ∕Bi þ ∕AgNPs triple-doped glass is enhanced by 42%, compared with a pristine sample, and the corresponding fluorescence lifetime is obtained with a value of 0.53 ms. It is reasonable that there is strong absorption of the incident photons due to the vibration frequency matching between AgNPs and incident photons, it can promote the localized surface plasmon resonance and energy transfer between AgNPs and Er 3þ ions, and in turn lead to an enhancement of fluorescence intensity. The above results demonstrate that the as-prepared Er 3þ ∕Bi þ ∕AgNPs triple-doped oxyfluoride tellurite glasses possess excellent fluorescence properties and may be a good carrier for mid-infrared fibers and laser gain materials.

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Effective enhanced 3.1 μm mid-infrared emission of Er3+/Yb3+ co-doped tellurite glasses introduced Ag nanoparticles

Wu,

Zhang

2024

J Mater Sci: Mater Electron

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Observation of efficient Er3+:4I11/2→4I13/2 transition in highly Er3+ doped germanosilicate glass

Cited by 10 publications

References 28 publications

Structural, Thermal, and Optical Properties of GeO₂-La₂O₃-TiO₂ Glasses

Structural, Thermal, and Optical Properties of GeO₂-La₂O₃-TiO₂ Glasses

Ag nanoparticles enhanced 3.1 μm mid-infrared emission of Er3+/Bi+ co-doped oxyfluoride tellurite glasses

Effective enhanced 3.1 μm mid-infrared emission of Er3+/Yb3+ co-doped tellurite glasses introduced Ag nanoparticles

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Observation of efficient Er3+:4I11/2→4I13/2 transition in highly Er3+ doped germanosilicate glass

Cited by 10 publications

References 28 publications

Structural, Thermal, and Optical Properties of GeO2-La2O3-TiO2 Glasses

Structural, Thermal, and Optical Properties of GeO2-La2O3-TiO2 Glasses

Ag nanoparticles enhanced 3.1 μm mid-infrared emission of Er3+/Bi+ co-doped oxyfluoride tellurite glasses

Effective enhanced 3.1 μm mid-infrared emission of Er3+/Yb3+ co-doped tellurite glasses introduced Ag nanoparticles

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Structural, Thermal, and Optical Properties of GeO₂-La₂O₃-TiO₂ Glasses

Structural, Thermal, and Optical Properties of GeO₂-La₂O₃-TiO₂ Glasses