Spectroscopic analysis on the basis Judd–Ofelt theory of Nd 3+ in (Y 0.985 Nd 0.015 ) 2 O 3 : A transparent laser-host ceramic

Tiwari, Vaibhav; Gupta, Pradeep Kumar

doi:10.1016/j.materresbull.2014.09.038

Cited by 21 publications

(4 citation statements)

References 22 publications

(46 reference statements)

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“…The small fit values of δ rms , as shown in Table , reveal the good agreement between f cal and f exp , which reveals the validity of J‐O theory. It can be observed that the %Error rms (5.34%‐12.11%) of all glass‐ceramics was in the range of 5%‐25% as observed in other materials, indicating that the calculated J‐O parameters are reliable …”

Section: Resultssupporting

confidence: 77%

A novel Nd³⁺‐doped MgO‐Al₂O₃‐SiO₂‐based transparent glass‐ceramics: Toward excellent fluorescence properties

Han

Lin

et al. 2019

J Am Ceram Soc

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Generally, glass-ceramics have superior properties compared to their parent glasses. Here, we prepared a novel Nd 3+ -doped MgO-Al 2 O 3 -SiO 2 -based transparent glass-ceramics with excellent fluorescence properties. The effects of Nd 2 O 3 content on the structure and properties of glass-ceramics were studied, aiming to provide a key guidance for preparing this transparent glass-ceramics. The results revealed that the glass stability increased originally and then decreased with increasing Nd 2 O 3 content, so did the variation of wavenumbers in infrared spectra. And these glass-ceramics are mainly composed of cordierite with residual glassy phase. The three phenomenological intensity parameters (Ω 2,4,6 ) and radiative properties were estimated by Judd-Ofelt theory, and the values of Ω 2 first decreased and then increased with increasing Nd 2 O 3 content. Three main emission peaks ascribed to the transitions from 4 F 3/2 to 4 I 9/2 , 4 I 11/2 , 4 I 13/2 at 898, 1057, 1330 nm were observed, respectively. The branching ratios for 4 F 3/2 → 4 I 11/2 transition increased as the Nd 2 O 3 content raised, and the fluorescence lifetimes of the 4 F 3/2 level were found to increase first and then decrease with Nd 2 O 3 content (from 181 to 726 μs). The excellent fluorescence properties indicate that this novel glass-ceramics can be used as a potential solid-state optical functional material for 1.06 μm laser emission. K E Y W O R D SJudd-Ofelt theory, MgO-Al 2 O 3 -SiO 2 , Nd 3+ -doped, solid-state optical functional materials, transparent glass-ceramics

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Section: Resultssupporting

confidence: 77%

A novel Nd³⁺‐doped MgO‐Al₂O₃‐SiO₂‐based transparent glass‐ceramics: Toward excellent fluorescence properties

Han

Lin

et al. 2019

J Am Ceram Soc

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“…(n = 1.640 for host BCNF glass), and t (= 1.32 mm) is the thickness of the sample [51]. The Tauc's plot of the (aht) 2 and (aht) 1/2 versus photon energy (ht) is shown in Fig.…”

Section: Optical Band Gap Energymentioning

confidence: 99%

Spectroscopic investigation on Dy3+ ions in borate glasses for photonic applications

Rasool,

Naveen Kumar,

Lingaswamy

et al. 2023

J Mater Sci: Mater Electron

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The samples were prepared and characterized using X-ray diffraction (XRD), Fourier transform infrared (FTIR), optical absorption, photoluminescence (PL), and decay time measurements on borate-based glasses with compositions of (60-Y) B 2 O 3 ? 20 CaO ? 20 NaF ? Y Dy 2 O 3 (Y = 0.2, 0.4, 0.6, 0.8, and 1.0%). Using the JO theory, the Judd-Ofelt (JO) intensity parameters (X k , k = 2, 4, and 6) for BCNFDy glasses were computed. The emission bands have been used to determine the chromaticity color coordinates (x, y), yellow to blue (Y/B) intensity ratios, stimulated emission cross-sections (r(k p )), effective band widths (Dk eff ), and others. By observing the strong 4 F 9/2 ? 6 H 15/2 transition (486 nm), the decays from the Dy 3? ions 4 F 9/2 level have been calculated. Due to the quenching process, it is discovered that the experimental lifetimes (s exp ) shorten as the quantity of Dy 3? ions increases. At lesser concentrations, the lifetime curves are absolutely single exponential and they step by step change to nonexponential at larger Dy 3? ion concentrations. A dipole-dipole type of energy transmission between the donor and acceptor is shown by how well the Inokuti-Hirayama (IH) model matches the non-exponential decay time curves for S = 6. The results obtained point to the usefulness of the glasses for possible future applications in w-LED technology.

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“…The reduced matrix elements could be found in the literature [13,[21][22][23]. For two or more manifolds, the reduced matrix elements are taken as the sum of the correspond-ing matrix elements.…”

Section: J') (J S →mentioning

confidence: 99%

Luminescence and Gamma Spectroscopy of Phosphate Glass Doped with Nd3+/Yb3+ and Their Multifunctional Applications

et al. 2022

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A new glass with a composition of 40P2O5-30ZnO-20LiCl-10BaF2 (in mol%), doped with 3.5Nd2O3-3.5Yb2O3, was fabricated by the quenching melt technique. The luminescence (PL) and gamma spectroscopy of the glass were investigated systematically. The spectroscopic parameters of the prepared glass, such as the optical energy gap, Judd–Ofelt parameters Ωk (where k = 2, 4 and 6), lifetimes and branching ratio of the Nd3+/Yb3+ level, were evaluated. Moreover, the shielding parameters, such as the linear and mass attenuation coefficients, mean free path and half-value layer, were evaluated. The prepared glass had a spectroscopic quality factor (Ω4/Ω6) of 0.84, which is about three-times larger than that of the most standard laser host, Nd3+:YAG. The energy of the 2P1/2 (Nd3+) level (~23,250 cm−1) was twice the energy of the Yb3+ transition (~10,290 cm−1). The value of the emission cross section (σem(λ)) of Nd3+:4F3/2→4I9/2 and Yb3+:2F5/2→2F7/2 were 2.23 × 10−24 cm2 and 2.88 × 10−24 cm2, respectively. The fabricated glass had a high emission cross section and low mean free path parameters, which makes the fabricated glass a potential candidate for multifunctional applications, such as laser emissions for medical purposes.

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Spectroscopic analysis on the basis Judd–Ofelt theory of Nd 3+ in (Y 0.985 Nd 0.015 ) 2 O 3 : A transparent laser-host ceramic

Cited by 21 publications

References 22 publications

A novel Nd³⁺‐doped MgO‐Al₂O₃‐SiO₂‐based transparent glass‐ceramics: Toward excellent fluorescence properties

A novel Nd³⁺‐doped MgO‐Al₂O₃‐SiO₂‐based transparent glass‐ceramics: Toward excellent fluorescence properties

Spectroscopic investigation on Dy3+ ions in borate glasses for photonic applications

Luminescence and Gamma Spectroscopy of Phosphate Glass Doped with Nd3+/Yb3+ and Their Multifunctional Applications

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Spectroscopic analysis on the basis Judd–Ofelt theory of Nd 3+ in (Y 0.985 Nd 0.015 ) 2 O 3 : A transparent laser-host ceramic

Cited by 21 publications

References 22 publications

A novel Nd3+‐doped MgO‐Al2O3‐SiO2‐based transparent glass‐ceramics: Toward excellent fluorescence properties

A novel Nd3+‐doped MgO‐Al2O3‐SiO2‐based transparent glass‐ceramics: Toward excellent fluorescence properties

Spectroscopic investigation on Dy3+ ions in borate glasses for photonic applications

Luminescence and Gamma Spectroscopy of Phosphate Glass Doped with Nd3+/Yb3+ and Their Multifunctional Applications

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A novel Nd³⁺‐doped MgO‐Al₂O₃‐SiO₂‐based transparent glass‐ceramics: Toward excellent fluorescence properties

A novel Nd³⁺‐doped MgO‐Al₂O₃‐SiO₂‐based transparent glass‐ceramics: Toward excellent fluorescence properties