Hydroxyl groups in erbium-doped germanotellurite glasses

Feng, Xian; Tanabe, Setsuhisa; Hanada, Teiichi

doi:10.1016/s0022-3093(00)00429-4

Cited by 169 publications

(89 citation statements)

References 13 publications

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“…− O-Te≡. 18,19 047101 The absorption coefficient (α OH − ) and concentration of OH − (N OH − ) in the glass network can be evaluated with the following two equations:…”

Section: B Ftir Transmission Spectramentioning

confidence: 99%

Enhanced 2.7 μm emission from Er3+ doped oxyfluoride tellurite glasses for a diode-pump mid-infrared laser

Zhang¹,

Zhang²,

Yuan³

et al. 2014

AIP Advances

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The influence of fluoride and shielding gas (O2 or Ar) on the physical and spectroscopic properties of Er3+ doped TeO2-ZnO-ZnF2 glass system is investigated. The larger electronegativity of F than O accounts for the gradual decrease of refractive index, density, and J-O parameters with increasing ZnF2. An analysis on Fourier transform infrared transmission spectra reveals that the absorption coefficient of OH− around 3 μm as low as 0.247 cm−1 can be achieved when 30 mol% ZnF2 containing sample is treated with Ar gas during glass melting process. The reduction of OH− groups combined with the low multiphonon relaxation rate (207 s−1) contributes to the enhanced emissions at 1.5 and 2.7 μm, along with prolonged lifetimes of 4I11/2 and 4I13/2 levels. A high branching ratio (17.95%) corresponding to the Er3+: 4I11/2 → 4I13/2 transition, the large absorption and emission cross section (0.44 × 10−20 cm2 and 0.45 × 10−20 cm2), and good gain cross section demonstrate that oxyfluoride tellurite glass could be a promising material for a diode-pump 2.7 μm fiber laser.

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“…− O-Te≡. 18,19 047101 The absorption coefficient (α OH − ) and concentration of OH − (N OH − ) in the glass network can be evaluated with the following two equations:…”

Section: B Ftir Transmission Spectramentioning

confidence: 99%

Enhanced 2.7 μm emission from Er3+ doped oxyfluoride tellurite glasses for a diode-pump mid-infrared laser

Zhang¹,

Zhang²,

Yuan³

et al. 2014

AIP Advances

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“…As no relevant value of ε OH has yet been reported in tellurite glasses, the value ε OH ¼49.1 Â 10 3 cm 2 /mol determined in silicate glasses has been considered here [25]. Fig.…”

Section: Theoretical Considerationsmentioning

confidence: 99%

Expanding broadband emission in the near-IR via energy transfer between Er3+–Tm3+ co-doped tellurite-glasses

Rivera

El-Amraoui

Ledemi

et al. 2014

Journal of Luminescence

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“…corresponding to OH -groups in silicate glasses (49.1 x 10 3 cm 2 /mol) [12]. Table IV presents the relative area of the bands corresponding to OH -groups, the maximum α and the calculated concentration of OH -groups both for bulk and film glasses.…”

Section: Structure and Morphology Of Thin Film Glassesmentioning

confidence: 99%

“…These characteristics contribute to increase the radiative transition rates when doped with RE ions, whereas their high RE ion solubility makes possible to co-dope them with more than a single RE ion, such as Er 3+ and Tm 3+ , to achieve broad PL emission [11]. However, one of the main drawbacks of tellurite glasses is the presence of hydroxyl (OH -) groups that quenches radiative emission of RE ions [12]. The addition of fluorine reduces the OH -concentration in fluorotellurite glasses [13,14,15] and leads to a reduction of electron-phonon coupling [13].…”

Section: Introductionmentioning

confidence: 99%

Er3+-doped fluorotellurite thin film glasses with improved photoluminescence emission at 1.53 µm

Morea

Miguel

Fernandez

et al. 2016

Journal of Luminescence

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Transparent oxyfluoride tellurite thin film glasses have been produced at room temperature by pulsed laser deposition in O 2 atmosphere from an Er-doped TeO 2 -ZnOZnF 2 bulk glass. Thin film glasses present high refractive index (n≥ 1.95) and good transparency (T≥ 80%) in the visible (λ> 400nm) and near infrared range. However, their photoluminescence (PL) performance at 1.5 µm is poor. Thermal annealing at moderate temperatures (T≤ 315 ºC), well below glass crystallization, increases the PL 2 intensity by more than one order of magnitude as well as the PL lifetime up to τ≈ 3.3 ms. Film glasses present a larger fraction of TeO 3 trigonal pyramids than the bulk glass and a very large OH -content. The structure and composition of film glasses does not change upon annealing and thus the activation of the PL response is related to the improvement of the surface morphology and the significant decrease of their OHcontent.

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Hydroxyl groups in erbium-doped germanotellurite glasses

Cited by 169 publications

References 13 publications

Enhanced 2.7 μm emission from Er3+ doped oxyfluoride tellurite glasses for a diode-pump mid-infrared laser

Enhanced 2.7 μm emission from Er3+ doped oxyfluoride tellurite glasses for a diode-pump mid-infrared laser

Expanding broadband emission in the near-IR via energy transfer between Er3+–Tm3+ co-doped tellurite-glasses

Er3+-doped fluorotellurite thin film glasses with improved photoluminescence emission at 1.53 µm

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