Enhanced 2.7 µm mid-infrared emission in Er3+/Ho3+ co-doped tellurite glass

Xia, Lizhang; Li, Chengyan; Ding, Jiale; Li, Jun; Zhou, Yaxun

doi:10.1016/j.optlastec.2021.106913

Cited by 30 publications

(13 citation statements)

References 51 publications

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“…The larger the values of Ω 4 and Ω 6 , the lower the basicity and the higher the hardness of a host material. A high Ω 6 value represents ionicity enhancement between rare earth and ligand atoms 28,29 . Compared with other glasses shown in Table 3, the glasses that involve the introduction of ZnF 2 which has a higher value of Ω 6 indicates a higher ionicity associated with rare earth ions.…”

Section: Resultsmentioning

confidence: 95%

“…A high Ω 6 value represents ionicity enhancement between rare earth and ligand atoms. 28,29 Compared with other glasses shown in Table 3, the glasses that involve the introduction of ZnF 2 which has a higher value of Ω 6 indicates a higher ionicity associated with rare earth ions. The magnitude of the measured oscillator strengths can be determined as an important spectroscopic parameter of Er 3+ -doped glasses.…”

Section: Raman Spectroscopy and Judd-oflet Calculationmentioning

confidence: 97%

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ZnF₂‐modified AlF₃‐based fluoride glasses with enhanced mid‐infrared 3.5 μ$\umu$m emission

et al. 2022

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A novel ZnF2–AlF3 based fluoride glass was prepared. The introduction of ZnF2 can lower the phonon energy of AlF3–BaF2–YF3–SrF2 glass while maintaining good thermal stabilities. The mid‐infrared emission properties of Er3+‐doped ZnF2–AlF3–YF3–SrF2–BaF2 (ZAYSB) glasses were investigated. Enhanced 3.5 μm and 2.7 μm emissions were observed with an incremental increase in the content of ZnF2. In addition, the Er3+‐doped ZAYSB glass was shown to have a large emission cross‐section of 3.5 μm. This study indicates that this ZAYSB glass is a promising glass material for 3.5 μm fiber‐laser applications.

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Section: Resultsmentioning

confidence: 95%

Section: Raman Spectroscopy and Judd-oflet Calculationmentioning

confidence: 97%

ZnF₂‐modified AlF₃‐based fluoride glasses with enhanced mid‐infrared 3.5 μ$\umu$m emission

et al. 2022

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“…15,16 Tellurite glass system seems promising because of its wide infrared transmission window, 12 high RE solubility, 17 low phonon energy, and good optical, chemical, and mechanical properties. 12,18 The composition of the tellurite glasses can easily be modified to improve some of their properties. For example, the thermal stability of tellurite glasses can be increased by adding Na 2 O or BaO as reported in Manikandan et al 19 The addition of Na 2 O was also reported to open the structure of the glass, 19,20 whereas the addition of BaO tends to make it denser and more compact.…”

Section: Introductionmentioning

confidence: 99%

“…Tellurite glass system seems promising because of its wide infrared transmission window, 12 high RE solubility, 17 low phonon energy, and good optical, chemical, and mechanical properties 12,18 . The composition of the tellurite glasses can easily be modified to improve some of their properties.…”

Section: Introductionmentioning

confidence: 99%

Study of visible, NIR, and MIR spectroscopic properties of Er³⁺‐doped tellurite glasses and glass–ceramics

et al. 2022

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In this paper, the structural, thermal, optical, and spectroscopic properties of Er 3+ -doped tellurite glasses with the composition 68.25TeO 2 -19.5ZnO-9.75X-2.5Er 2 O 3 (in mol%) with X = BaO, Na 2 O, and Bi 2 O 3 are reported. The glasses were prepared using the standard melt quenching method. The investigated glasses exhibit low phonon energy (∼745 cm −1 ) and low glass transition temperature varying between 300 and 350 • C depending on the glass composition. The Raman spectra show a regular tellurite structure with variations in the number of bridging and non-bridging oxygens depending on the glass composition, the Na 2 O and Bi 2 O 3 -containing glasses having the most and the least polymerized network, respectively. A thermal treatment of the glasses leads to the formation of crystals, the composition of which depends on the glass composition, as revealed by X-ray diffraction analysis and confirmed using scanning electron microscope-energydispersive spectroscopy. The precipitation of Er-containing crystals in the Na 2 O and BaO-containing glasses leads to an increase in the intensity of the upconversion emissions. Although the Er 3+ ions remain in the amorphous part of the Bi 2 O 3 -containing glass after heat treatment, it is the precipitation of Bi 3.2 Te 0.8 O 6.4 crystals in this glass, which is thought to decrease the distance between the Er 3+ ions leading to an increase in the intensity of the upconversion and mid-infrared emissions.

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“…Among glass hosts, heavy metal oxides (HMO) glasses and especially the tellurite and germanate glasses have drawn growing interest as alternative hosts for mid-infrared emitting optical centers [ 7 ]. Tellurite glasses offer a wide transmission window from 0.4 to 6.5 µm, low maximum phonon energy (~750 cm −1 ), high rare-earth solubility, T g (~350 °C), and high refractive indices (~2) and nonlinear coefficients 20–50 × 10 −20 m 2 /W [ 8 , 9 ]. Due to these features, tellurite glasses might be used as waveguides or gain media for fiber lasers, Raman gain, fiber optical amplifiers, and broadband laser sources through supercontinuum (SC) generation [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the TeO2/GeO2 Ratio on the Spectroscopic Properties of Eu3+-Doped Oxide Glasses for Optical Fiber Application

et al. 2021

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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.

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Enhanced 2.7 µm mid-infrared emission in Er3+/Ho3+ co-doped tellurite glass

Cited by 30 publications

References 51 publications

ZnF₂‐modified AlF₃‐based fluoride glasses with enhanced mid‐infrared 3.5 μ$\umu$m emission

ZnF₂‐modified AlF₃‐based fluoride glasses with enhanced mid‐infrared 3.5 μ$\umu$m emission

Study of visible, NIR, and MIR spectroscopic properties of Er³⁺‐doped tellurite glasses and glass–ceramics

Investigation of the TeO2/GeO2 Ratio on the Spectroscopic Properties of Eu3+-Doped Oxide Glasses for Optical Fiber Application

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Enhanced 2.7 µm mid-infrared emission in Er3+/Ho3+ co-doped tellurite glass

Cited by 30 publications

References 51 publications

ZnF2‐modified AlF3‐based fluoride glasses with enhanced mid‐infrared 3.5 μ$\umu$m emission

ZnF2‐modified AlF3‐based fluoride glasses with enhanced mid‐infrared 3.5 μ$\umu$m emission

Study of visible, NIR, and MIR spectroscopic properties of Er3+‐doped tellurite glasses and glass–ceramics

Investigation of the TeO2/GeO2 Ratio on the Spectroscopic Properties of Eu3+-Doped Oxide Glasses for Optical Fiber Application

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ZnF₂‐modified AlF₃‐based fluoride glasses with enhanced mid‐infrared 3.5 μ$\umu$m emission

ZnF₂‐modified AlF₃‐based fluoride glasses with enhanced mid‐infrared 3.5 μ$\umu$m emission

Study of visible, NIR, and MIR spectroscopic properties of Er³⁺‐doped tellurite glasses and glass–ceramics