A Tm3+-doped ZrF4-BaF2-YF3-AlF3 glass microsphere laser in the 2.0 μm wavelength region

Zhao, Haiyan; Li, A. Z.; Yi, Yating; Tokurakawa, Masaki; Brambilla, Gilberto; Jia, Shijie; Wang, Sen; Wang, P.F.

doi:10.1016/j.jlumin.2019.04.046

Cited by 25 publications

(5 citation statements)

References 34 publications

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“…Therefore, ZBYA glass has been chosen as the material to fabricate the microsphere in the investigation described in this article and to thus provide the Er 3+ doped C-band laser output. A Tm 3+ -doped ZBYA glass microsphere laser operating in the 2.0 μm wavelength region was initially reported by some of the authors of this article early in 2019 [29].…”

Section: Introductionmentioning

confidence: 94%

Up-Conversion Luminescence and C-Band Laser in Er³⁺-Doped Fluorozirconate Glass Microsphere Resonator

Zhao

Wang

et al. 2019

IEEE Photonics J.

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Up-conversion luminescence and C-band microsphere laser output is reported for an Er 3+-doped ZrF 4-BaF 2-YF 3-AlF 3 (ZBYA) fluorozirconate glass microsphere. The microsphere was fabricated by heating a ZBYA glass filament using a CO 2 laser beam. The fabrication process accurately and repeatably produces microspheres of 68 μm diameter. The input and output laser light was coupled to the microsphere using a tapered optical fiber. The coupling position between the tapered fiber and microsphere was adjusted using a sophisticated three-dimensional translation stage. The up-conversion luminescence emission, single-mode and multi-mode laser at C-band (1530 to 1565 nm) were observed when pumped using a 980 nm laser.

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Section: Introductionmentioning

confidence: 94%

Up-Conversion Luminescence and C-Band Laser in Er³⁺-Doped Fluorozirconate Glass Microsphere Resonator

Zhao

Wang

et al. 2019

IEEE Photonics J.

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“…The second excitation process is ETU process 3 H 4 , 3 F 2 → 1 D 2 , 3 H 6 shown in figure 2(a). This mechanism most likely takes place because of the considerably long lifetime of level 3 H 4 [10], which permits the excited Tm 3+ ion to accumulate and produce dipole-dipole contact and nonradiative energy transfer onto another Tm 3+ ion, which subsequently agitates them into a more excited state.…”

Section: Excitation and Emission Spectrummentioning

confidence: 99%

“…These spectroscopic results serve as a representation of the fundamental conditions necessary to create and enhance laser transitions. Many researchers have presented insights into the spectroscopy of Tm 3+ doped various types of glasses with high and low phonon energies, such as fluoride in AlF 3 , telluride, and Sulphur-based chalcogenides at 800-1800 nm [9][10][11][12][13][14][15].…”

Section:  Introductionmentioning

confidence: 99%

Spectral analysis and line strengths of Tm₂O₃ doped ZrF₄-BaF₂-LaF₃-AlF₃-NaF glass under upconversion excitation at a pumping wavelength of 1064 nm

El-Agmy¹,

Abouelmaaref²

2022

Phys. Scr.

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In the visible range at blue 455 nm, 482 nm, and red 670 nm under upconversion pumping at a wavelength of 1064 nm, spectroscopic characteristics, and transition rates in Tm3+ doped 0.53 ZrF4, 0.2 BaF2, 0.04 LaF3, and 0.03 AlF3 and 0.2 NaF (ZBLAN) glass matrix are described. The Judd-Ofelt theory is applied to calculate the contributions from electric and magnetic dipoles to the optical intensity parameters (Ωt), which are found to be as follows: Ω2 =1.4703± 0.0675, Ω4=0.7477± 0.0536, Ω6=0.6202± 0.0212. For transitions originating from the 1D2, 1G4, 2F2, 3F3, and 3F4 levels, branching ratios (β), radiative lifetimes (rad in ms units), and transition probabilities (in s-1) have been calculated. Additionally, we evaluated the optical gain at 455 nm, 467 nm and 670 nm, as well as the absorption/emission cross sections for the three visible transitions. According to the obtained results, the transition at 455 nm (1D23F4) had the largest emission cross section values compared to transitions at 482 nm (1G43H6) and 670 nm (3F23H6). Furthermore, the transition probability.is theoretically calculated for the ultraviolet (UV) range 172–283.8 nm. A good agreement is found between the calculations and the measurements for the visible range.

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“…Microlasers in the two-micron range are potentially interesting for extensive application in remote chemical sensing, biomedicine, and atmosphere monitoring. Lasing in the two-micron range is easily achieved in microspheres doped with Tm 3+ and/or Ho 3+ ions (sometimes with the addition of other co-dopants) [17][18][19][20][21][22][23][24][25][26]. Due to high gain of Tm 3+ ions, lasing is easily achieved in various glass matrices such as silica [17], tellurite [18][19][20], fluorotellurite [21], fluoride [22], and even chalcogenide [23].…”

Section: Introductionmentioning

confidence: 99%

In-Band Pumped Thulium-Doped Tellurite Glass Microsphere Laser

2021

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Microresonator-based lasers in the two-micron range are interesting for extensive applications. Tm3+ ions provide high gain; therefore, they are promising for laser generation in the two-micron range in various matrices. We developed a simple theoretical model to describe Tm-doped glass microlasers generating in the 1.9–2 μm range with in-band pump at 1.55 μm. Using this model, we calculated threshold pump powers, laser generation wavelengths and slope efficiencies for different parameters of Tm-doped tellurite glass microspheres such as diameters, Q-factors, and thulium ion concentration. In addition, we produced a 320-μm tellurite glass microsphere doped with thulium ions with a concentration of 5·1019 cm−3. We attained lasing at 1.9 μm experimentally in the produced sample with a Q-factor of 106 pumped by a C-band narrow line laser.

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A Tm3+-doped ZrF4-BaF2-YF3-AlF3 glass microsphere laser in the 2.0 μm wavelength region

Cited by 25 publications

References 34 publications

Up-Conversion Luminescence and C-Band Laser in Er³⁺-Doped Fluorozirconate Glass Microsphere Resonator

Up-Conversion Luminescence and C-Band Laser in Er³⁺-Doped Fluorozirconate Glass Microsphere Resonator

Spectral analysis and line strengths of Tm₂O₃ doped ZrF₄-BaF₂-LaF₃-AlF₃-NaF glass under upconversion excitation at a pumping wavelength of 1064 nm

In-Band Pumped Thulium-Doped Tellurite Glass Microsphere Laser

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A Tm3+-doped ZrF4-BaF2-YF3-AlF3 glass microsphere laser in the 2.0 μm wavelength region

Cited by 25 publications

References 34 publications

Up-Conversion Luminescence and C-Band Laser in Er3+-Doped Fluorozirconate Glass Microsphere Resonator

Up-Conversion Luminescence and C-Band Laser in Er3+-Doped Fluorozirconate Glass Microsphere Resonator

Spectral analysis and line strengths of Tm2O3 doped ZrF4-BaF2-LaF3-AlF3-NaF glass under upconversion excitation at a pumping wavelength of 1064 nm

In-Band Pumped Thulium-Doped Tellurite Glass Microsphere Laser

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Up-Conversion Luminescence and C-Band Laser in Er³⁺-Doped Fluorozirconate Glass Microsphere Resonator

Up-Conversion Luminescence and C-Band Laser in Er³⁺-Doped Fluorozirconate Glass Microsphere Resonator

Spectral analysis and line strengths of Tm₂O₃ doped ZrF₄-BaF₂-LaF₃-AlF₃-NaF glass under upconversion excitation at a pumping wavelength of 1064 nm