Radiative emission probabilities of Dy3+-doped alkali borate and fluoroborate glasses

Moorthy, L. Rama; Radhapathy, A.; Jayasimhadri, M.; Moorthy, D.V.R.; Kumar, Ranjan

doi:10.1016/j.jallcom.2005.01.083

Cited by 14 publications

(3 citation statements)

References 17 publications

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“…From the tabulated results it is observed that, the 4 F 9/2 → 6 H 13/2 transition values of the Dy 3+ ions are found to be larger in magnitude compared to other energy levels uniformly for all the studied glasses. These $\sigma _{P}^{E} $ values are found to be almost similar to the reported Dy 3+ :glasses 22, 37.…”

Section: Resultssupporting

confidence: 85%

Dysprosium doped lead fluoroborate glasses: Structural, optical, and thermal investigations

Rayappan

Maheshvaran

Babu

et al. 2011

Physica Status Solidi (a)

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Dy 3þ doped lead fluoroborate (LFB) glasses (B 2 O 3 þ PbO þ PbF 2 ) have been prepared following conventional melt quenching technique by varying the concentration of Dy 2 O 3 in the order 0.01, 0.1, 1, 2, and 3 mol%. X-ray powder diffraction (XRD), Fourier transform infrared (FTIR), optical absorption, fluorescence emission, and decay curves have been recorded and analyzed. From the optical measurements and based on the Judd-Ofelt (JO) theory, the JO intensity parameters were evaluated and in turn used to evaluate the radiative transition probabilities (A), stimulated emission cross-section (s E P ), radiative lifetimes (t rad ), and branching ratios (b R ) for the various 4 F 9/2 ! 6 H J (J ¼ 11/2, 13/2, 15/2) transitions of Dy 3þ ions in the LFB glasses and these values were compared with the other reported Dy 3þ :glasses. The decay curves of the 4 F 9/2 level were measured and found to be deviate from the exponential nature with the increase in Dy 3þ ion concentration. The luminescence quantum efficiency of the 4 F 9/2 level was also determined and discussed. Differential scanning calorimetry (DSC) curves were used to evaluate the glass stability factor (S) and Hruby's parameter (H R ) through the glass transition (T g ), crystallization (T c ), and melting (T m ) temperatures and these results were discussed and reported.

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Section: Resultssupporting

confidence: 85%

Dysprosium doped lead fluoroborate glasses: Structural, optical, and thermal investigations

Rayappan

Maheshvaran

Babu

et al. 2011

Physica Status Solidi (a)

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“…The hypersensitivity has described by the magnitude of Ω 2 parameter provide information on the nature of the bond between rare earth ions and surrounding ligand, as well as symmetry of rare earth environment. The Ω 4 parameters are related to the bulk properties [78]. It would remove methodological differences that exist among past studies and may yield a much clearer picture of chemical and structural trends in the Ω intensity parameters.…”

Section: = Hcνa T N ∝ (Area Under the Curve)--------(8)mentioning

confidence: 99%

Tunable white light emissive Mg2SiO4:Dy3+ nanophosphor: Its photoluminescence, Judd–Ofelt and photocatalytic studies

et al. 2016

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“…Where m is the electron mass; J is the angular momentum (kg m 2 •s -2 ),  is the energy of the transition in cm -1 ,  (λ = 2, 4 and 6) are the JO intensity parameters and   2 are the doubly reduced matrix elements of the unit tensor operator [27] c is the light speed, n is the refractive index, h is Planck's constant and   2 are the doubly reduced square matrix elements of the unit tensor operator which are evaluated from the intermediate coupling approximation for a transition from J to  J state [28]. < 𝑈  > is independent of the host matrix.…”

Section: Judd-ofelt Intensity Parametersmentioning

confidence: 99%

Sm<sup>3+</sup> ions doped zinc barium tellurite oxyfluoride glasses for laser materials

Yamsuk¹,

Yasaka²,

Kaewkhao³

et al. 2020

J Met Mater Miner

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The Sm3+ ions were doped tellurite glasses with composition (55-x) TeO2-10ZnF2-35BaO-xSm2O3 (where x = 0.00, 0.05, 0.10, 0.50, 1.00 and 1.50 in mol%) to investigate the physical, the optical, the luminescence and structural properties. The functional groups can be identified using FT-IR spectra of Sm3+ in the glasses. The most intense peak from emission spectra is at 600 nm (4G5/2->6H7/2) corresponding to reddish-orange color. The oscillator strengths were resolved from the absorption spectra and then used to calculate the Juddâ€“Ofelt (Jâ€“O) intensity parameters. The radiative properties were calculated by Jâ€“O intensity parameters for various transitions in tellurite glass matrices. According to the results of stimulated emission cross section, lifetime and the branching ratio of the emission transition 4G5/2->6H7/2, it is promised that 0.50 mol% of Sm2O3 doped tellurite glasses is the potential laser material.

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Radiative emission probabilities of Dy3+-doped alkali borate and fluoroborate glasses

Cited by 14 publications

References 17 publications

Dysprosium doped lead fluoroborate glasses: Structural, optical, and thermal investigations

Dysprosium doped lead fluoroborate glasses: Structural, optical, and thermal investigations

Tunable white light emissive Mg2SiO4:Dy3+ nanophosphor: Its photoluminescence, Judd–Ofelt and photocatalytic studies

Sm<sup>3+</sup> ions doped zinc barium tellurite oxyfluoride glasses for laser materials

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