Spectroscopic investigations of 1.06 µm emission and time resolved Z-scan studies in Nd3+-doped zinc tellurite based glasses

Kesavulu, C.R.; Suresh, K.; Santos, J.F.M. dos; Catunda, T.; Kim, H.J.; Jayasankar, C.K.

doi:10.1016/j.jlumin.2017.08.037

Cited by 30 publications

(4 citation statements)

References 59 publications

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“…The nephelauxetic effect results in a slight wavelength shift for the lanthanide transitions in different hosts due to deformations in the lanthanide electronic orbitals (within the 4f configuration). The nephelauxetic ratios (β) are calculated using equations referred elsewhere [47] :…”

Section: Bonding Propertiesmentioning

confidence: 99%

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Structural and spectroscopic investigations of neodymium‐doped strontium borophosphate glass

et al. 2021

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Neodymium-doped glass finds application in lasers with high energy and low pulse width. In the present study, a series of Nd 3+ ions (0-2 mol%)-doped strontium borophosphate (SBP) glass samples was prepared through the conventional melt quench method. A broad peak in the X-ray diffraction spectrum confirmed the formation of a single-phase amorphous borophosphate glass. Fourier transform infrared spectra of the doped and undoped glass samples indicated the presence of borate and phosphate groups that form the anionic network. The thermal properties of the glass samples were determined from thermogravimetry/differential thermal analysis.Photoluminescence and ultraviolet-visible light techniques were used to investigate the optical properties of the as-prepared SBP:Nd glass. The Judd-Ofelt (JO) intensity parameters Ω λ (2, 4, 6), stimulated emission cross-section, branching ratios, and transition probabilities of the Nd 3+ -doped glass were obtained through the JO analysis.Characteristic Nd 3+ emission peaks were observed at 1330, 1060, and 876 nm, corresponding to the 4 F 3/2 ! 4 I S/2 (S = 13, 11, and 9) transitions, respectively. The suitability of SBP:Nd (0.5 mol%) glass for use in solid-state lasers was demonstrated by its intense luminescence, high transition probability, high emission cross-section, optical gain, and luminescence branching ratio.

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Section: Bonding Propertiesmentioning

confidence: 99%

“…4 I 11/2 transition (β R ≥ 0.50) was observed for 0.5 mol% Nd 3+ :SBP glass, suggesting its possible use for laser applications. [47,52] The 4 F 3/2 ! 4 I 11/2 transition probability was higher in magnitude, resulting in higher σ E p value compared with other excited state transitions.…”

Section: Judd-ofelt Analysis and Radiative Parametersmentioning

confidence: 99%

Structural and spectroscopic investigations of neodymium‐doped strontium borophosphate glass

et al. 2021

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“…The properties of neodymium ions in the present glass matrix are indicated by these absorption bands. Transitions from from 2 P 1/2 , 4 G 5/2 + 2 D 3/2 + 2 K 15/2 ), ( 4 G 9/2 ), ( 2 K 13/2 + 4 G 7/2 ), ( 2 G 7/2 + 4 G 7/2 ), ( 2 H 11/2 ), ( 4 F 9/2 ), ( 4 S 3/2 + 4 F 7/2 ), ( 4 F 5/2 + 2 H 9/2 ), and ( 4 F 3/2 ) are observed around wavelengths of 432, 479,515, 528, 595, 630, 683, 756, 800 nm respectively [21]- [23]. Because of the f-f interaction of Nd 3+ ions, the absorption spectra have numerous in-homogeneously widened bands.…”

Section: Absorption Spectra Analysismentioning

confidence: 96%

Oxide ion polarizability, optical basicity, and metallization criterion of GO-coated Nd2O3 (NPs) - TeO2 glass for linear optical fibre

Shaari¹,

Azlan²,

Azlina³

et al. 2022

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The versatility of graphene oxide (GO) as coating materials on the glass surface is a new revolution in the advanced glass era. In this work, GO liquid solution was prepared by using electrochemical exfoliation in an electrolyte solution assisted by different surfactants. Meanwhile, a glass series was prepared by using the conventional meltquenched technique. A low-cost and simple spray deposition technique was used to deposit the GO on the glass sample. The obtained glass series was denoted as GO coated TNd (NPs), meanwhile, the uncoated glass was labelled as uncoated TNd (NPs). The linear optical properties of GO coated TNd (NPs) glass series was determined using UVVis spectrophotometer and utilizing the Lorentz-Lorentz equation to determine the value of polarizability. X-ray diffraction spectra revealed the amorphous structural characteristics of the glass series. The SEM morphological image revealed the variation of GO distribution on the glass surface due to the agglomeration and inhomogeneity of GO distribution on the glass surface. The homogeneity of GO distribution on the glass surface is negligible in this work as we focus solely on the effect of GO on glass properties. According to the observations, the value of GO-coated TNd (NPs) is in the range 3.4531- 3.8549 Å and uncoated TNd (NPs) is in the range 2.709- 2.774 Å. Meanwhile, the optical basicity value ranges from 1.220 to 1.262. These results demonstrate that the polarizability of oxide ions and optical basicity values of the GO coated TNd (NPs) glass series was higher than the uncoated TNd (NPs) glass. The metallization criterion for the GO-coated TNd (NPs) glass system is in the range of 0.3 < M < 0.4. Based on these results, the obtained glasses are promising in linear optical glass fibre.

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“…These absorption bands represent the properties of the neodymium ion in the current glass matrix. To identify, a few absorption peak bands at 430, 478, 529, 586, 683, 750, 799, and 877 nm are ascribed from ground state to the excitation state [34], [36]- [37]. Because of the π-π* electronic transition of sp 2 hybridised C = C bonds, the intensity of the optical absorption spectra was also altered by the presence of rGO [38].…”

Section: Absorption Spectramentioning

confidence: 99%

The Effect of rGO On Optical Properties of Neodymium Nanoparticles Doped Tellurite Glass System

Noorazlan

2022

JMechE

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Nanomaterials based on graphene have outstanding properties, particularly in terms of optical performance. Using melt-quenching and low-cost spray coating procedures, we effectively generated a series of reduced graphene oxide-coated tellurite glasses doped with neodymium nanoparticles, denoted as rGO-ZBTNd (NPs) glasses. An X-ray diffraction study of glass samples validated the glass system's amorphous structure. FESEM morphological analysis was used to evaluate the appearance of rGO on the glass substrate and revealed the dispersion of rGO. UV-Vis spectroscopy was used to determine different absorption bands. The refractive index value calculated using the Dimitrov and Sakka equation was found to be more than n > 2.000 and in the range of 2.339 to 2.657 when compared to uncoated samples. On the basis of these findings, a new method involving rGO deposited on tellurite glass has been developed to improve the tellurite glass currently utilised in laser applications.

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Spectroscopic investigations of 1.06 µm emission and time resolved Z-scan studies in Nd3+-doped zinc tellurite based glasses

Cited by 30 publications

References 59 publications

Structural and spectroscopic investigations of neodymium‐doped strontium borophosphate glass

Structural and spectroscopic investigations of neodymium‐doped strontium borophosphate glass

Oxide ion polarizability, optical basicity, and metallization criterion of GO-coated Nd2O3 (NPs) - TeO2 glass for linear optical fibre

The Effect of rGO On Optical Properties of Neodymium Nanoparticles Doped Tellurite Glass System

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