Up-conversion and 2 µm mid-infrared emission effective enhancements in Ho3+/Yb3+ co-doped tellurite glass

Yun, Chao; Li, Zhangwen; Ping, Yunxia; Miao, Xuelong; Zhang, Chaomin

doi:10.1016/j.ijleo.2021.167262

Cited by 8 publications

(3 citation statements)

References 24 publications

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“…Energy level diagram of Yb3+, Ho3+, and Er3+ and the luminescent mechanisms involved in the near-infrared and up-conversion emissions under 980 nm excitation 35 – 37 …”

Section: Resultsmentioning

confidence: 99%

“…8 Energy level diagram of Yb 3þ , Ho 3þ , and Er 3þ and the luminescent mechanisms involved in the near-infrared and up-conversion emissions under 980 nm excitation. [35][36][37] (2) Through the radiation transition of Ho 3þ ∶ 5 I 7 → 5 I 8 , a fluorescence emission of 2.0 μm occurs. Meanwhile, through the ET1 and ET3 processes, Yb 3þ and Er 3þ transfer energy to the 5 I 6 level of the Ho 3þ ion and then transfer to 5 I 7 by MR, where energy is accumulated at 5 I 7 .…”

Section: Energy Transfer Analysismentioning

confidence: 99%

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Investigation of intense mid-infrared emission in Ho3+/Yb3+/Er3+ triple-doped tellurite glass

Zhang

Lai

2022

Opt. Eng.

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Rare earth ion doping is considered to be a feasible way to improve the optical properties of glass in recent years. We investigate the luminescence characteristics of Ho 3þ -Er 3þ -Yb 3þ triple-doped tellurite glass (TeO 2 -ZnO-WO 3 -La 2 O 3 ) at 2.0 μm. A series of characterization analyses on the prepared samples, such as x-ray diffractometer (XRD) pattern, Raman spectrum, differential scanning calorimetry (DSC) curve analyses, absorption spectrum, emission spectrum, and fluorescence decay curve, were performed. XRD pattern and DSC curve analyses indicate that the glass sample exhibits a typical amorphous structure with excellent thermodynamic stability. Through the absorption spectrum, the position and intensity of the absorption peak of the glass sample can be detected. Under an excitation of 980 nm laser, the 2.0-μm emission peak intensity of the glass sample increases by about 1500%, which is attributed to the energy level transition among Ho 3þ , Er 3þ , and Yb 3þ . By analyzing the energy level transition of Ho 3þ , Yb 3þ , and Er 3þ ions, the energy transfer mechanism and fluorescence lifetime can be obtained, and then the fluorescence enhancement phenomenon of Ho 3þ -Er 3þ -Yb 3þ triple-doped tellurite glass at 2.0 μm can be explained. It is demonstrated that the as-prepared Ho 3þ -Er 3þ -Yb 3þ triple-doped tellurite glass has potential for the application of fiber lasers and fiber amplifiers.

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“…Energy level diagram of Yb3+, Ho3+, and Er3+ and the luminescent mechanisms involved in the near-infrared and up-conversion emissions under 980 nm excitation 35 – 37 …”

Section: Resultsmentioning

confidence: 99%

Section: Energy Transfer Analysismentioning

confidence: 99%

Investigation of intense mid-infrared emission in Ho3+/Yb3+/Er3+ triple-doped tellurite glass

Zhang

Lai

2022

Opt. Eng.

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“…In recent years, fiber lasers in the mid-infrared band have become a hot topic due to their potential applications in remote sensing monitoring, military, and other fields [1][2][3][4][5][6][7][8][9]. Usually, ~3 µm emission originates from the radiative transition of Ho 3+ : 5 I 6 → 5 I 7 , Er 3+ : 4 I 11/2 → 4 I 13/2 , and Dy 3+ : 6 H 13/2 → 6 H 15/2 [2].…”

Section: Introductionmentioning

confidence: 99%

Broadband 2.85 μm Luminescence Properties of Er3+/Dy3+ Co-Doped Fluorotellurite Glass

Bai,

Zhou,

Cao

et al. 2023

Photonics

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TeO2-BaF2-Er2O3-Dy2O3 laser glasses were prepared using the melt-quenching method. The bound water that can capture the excited state energy was reduced by physical and chemical methods. We did not observe a significant Er3+ emission peak at 2.7 μm in fluorescence spectra, which may be due to the efficient energy transfer process (ET2). Meanwhile, we found a broadband gain span of approximately 400 nm in fluorescence spectra at the 2.85 μm band, attributed to the ‘vector summation’ of the energy level radiation transition and the change of the glass network. Subsequently, we explored the structural properties of the glass. The results indicated that the Gaussian peak located at 250 cm−1 drifts toward 370 cm−1, which may be caused by the fracture or recombination of Te-O-Te and a decrease in the bridge oxygen content with the increasing concentration of Er2O3. The topology cage structure around the luminescence center of rare earth ions is changed and the stability of the optically active center is enhanced, finally contributing to the enhancement of luminescence. Meanwhile, the maximum σemi and gain coefficient of Dy3+ reach up to 7.22 × 10−21 cm2 and 7.37 cm−1, respectively. The comprehensive results show that the fluorotellurite glass designed in this study is expected to be a gain medium for mid-infrared lasers in remote sensing monitoring, military, and other fields.

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Effective improvement of 2.0-µm and 4.1-µm mid-infrared emission in Tm3+/Ho3+-co-doped tellurite glasses

Zhang

Lai

2022

J Mater Sci: Mater Electron

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Up-conversion and 2 µm mid-infrared emission effective enhancements in Ho3+/Yb3+ co-doped tellurite glass

Cited by 8 publications

References 24 publications

Investigation of intense mid-infrared emission in Ho3+/Yb3+/Er3+ triple-doped tellurite glass

Investigation of intense mid-infrared emission in Ho3+/Yb3+/Er3+ triple-doped tellurite glass

Broadband 2.85 μm Luminescence Properties of Er3+/Dy3+ Co-Doped Fluorotellurite Glass

Effective improvement of 2.0-µm and 4.1-µm mid-infrared emission in Tm3+/Ho3+-co-doped tellurite glasses

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