Physical properties, ligand field and Judd-Ofelt intensity parameters of bio-silicate borotellurite glass system doped with erbium oxide

Hamza, A.M.; Halimah, M.K.; Muhammad, F.D.; Chan, K.T.

doi:10.1016/j.jlumin.2018.11.038

Cited by 42 publications

(19 citation statements)

References 48 publications

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“…As tabulated in Table 5, both bonds parameters are negative, showing an erbium ion ligand possess an ionic bonding [22][23]. However, the bonds decrease with the increasing of silver oxide concentration.…”

Section: Judd-ofelt Analysismentioning

confidence: 91%

“…The absorption cross-section can be derived from the absorption spectra (UV-Vis). The emission cross-section is also crucial to determine the potential performance of a laser by relating both absorption and emission cross-sections simultaneously [22,45]. Figure 13 presents the emission cross-section of the samples of silver-doped erbium zinc tellurite glass samples.…”

Section: Mccumber Theory Absorption and Emission Cross-section Analysismentioning

confidence: 99%

“…A broad emission cross-section is one of the essential requirements for a broadband amplifier, producing a higher rate of energy extraction which is needed by the optical materials [46]. According to Hamza et al, (2019) [22], a higher value of stimulated emission cross-section promotes lower threshold and higher optical gain applications, useful for better laser performance. The threshold is the point where the first laser action occurs.…”

Section: Mccumber Theory Absorption and Emission Cross-section Analysismentioning

confidence: 99%

“…The decrement of racah parameters provide stronger covalence bonds characteristics. In 2019, Hamza and other coauthors [22] had mentioned that the decrement of these parameters could be attributed to the larger orbital size.…”

Section: Judd-ofelt Analysismentioning

confidence: 99%

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Zinc Tellurite Glass System Incorporated with Erbium Oxide and Silver Oxide as Ultra-Broad (S+C+L) Bands Optical Communication

Nazrin

Halimah

Yee

et al. 2022

Preprint

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Melt-quenching method was used to synthesize a series of zinc tellurite glasses doped with erbium oxide and silver oxide. At room temperature, X-ray diffraction (XRD) and density measurement were implemented to characterize the prepared glass samples. The amorphous nature of the glass samples is proven from the XRD spectra obtained in this work. The density of the glass showed an increment trend from 4.4673 to 4.9705 g/cm3 when adding more silver oxide, which can prove that the glass strength is higher. For photoluminescence analysis, blue, green and red emissions were found in the glass series under 375 nm excitation wavelength. According to McCumber theory, higher emission cross-section and higher FWHM are efficient for both broadband amplifier and laser application. More extensive and flatter gain with a maximum gain difference has covered both C and L bands for optical communication, providing a few channels in the wavelength division multiplex network (WDM). The high efficiency of optical amplification is justified with a higher gain figure of merit and larger gain bandwidth. According to McCumber’s theory, all the results proved that 0.03 molar fraction of silver oxide is the most optimum concentration to be applied in the optical application. In Judd-Ofelt analysis, spectroscopic quality factor and shorter lifetime is a crucial parameter for obtaining intense laser transition, strong emission probabilities and encouraging the laser optical transition, which was successfully attained in all glass samples. The present glass system is also applicable for white light application since the standard equal energy point from all glass samples were located near the center of the CIE diagram (0.33, 0.33). In the meantime, higher values of CCT range from 6761 to 6937 K produce light with a better image as compared to lower CCT. Higher CCT is commercially used in LCD (liquid crystal display) and CRT (cathode ray tube) screens. The colour purity is a parameter for better white LED application, whereas low colour purity is for pure white light emission. Therefore, lower colour purity was found around 10.7 around 18.8% in all glass samples.

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Section: Judd-ofelt Analysismentioning

confidence: 91%

Section: Mccumber Theory Absorption and Emission Cross-section Analysismentioning

confidence: 99%

Section: Mccumber Theory Absorption and Emission Cross-section Analysismentioning

confidence: 99%

Section: Judd-ofelt Analysismentioning

confidence: 99%

See 2 more Smart Citations

Zinc Tellurite Glass System Incorporated with Erbium Oxide and Silver Oxide as Ultra-Broad (S+C+L) Bands Optical Communication

Nazrin

Halimah

Yee

et al. 2022

Preprint

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“…One of the areas considered these days for the rice husk is in glass and ceramics fabrications for optical fibre, optoelectronics and other glass and ceramics technological applications [3][4][5]. Many different researchers have worked on the silicate extraction (from the rice husk) for fabrication different glass compositions for various technological and industrial applications [6,7].…”

Section: Introductionmentioning

confidence: 99%

Structural, elastic and thermo-physical properties of Er2O3 nanoparticles doped bio-silicate borotellurite glasses

et al. 2020

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This paper presents a study on the structural, morphological and elastic properties of erbium oxide nanoparticles doped bio-silicate borotellurite glass system fabricated using the technique of melt-quenching with chemical compositional formula {[(TeO 2 ) 0.7 (B 2 O 3 ) 0.3 ] 0.8 (SiO 2 ) 0.2 } 1−y (Er 2 O 3 NPs) y where 0.01 ≤ y ≤ 0.05. The objective of the work was to study the some elastic and thermal parameters associated with non-destructive ultrasonic technique, with the aim of utilizing the glasses for erbium doped fiber amplifier application. Various measurements and Characterizations techniques which includes density and molar volume measurements, energy dispersive X-ray fluorescence, X-ray diffraction (XRD), Fourier transform infrared (FTIR), Transmission electron microscopy and Pulse-echo technique were carried out in this study. The density values for the glasses increased from 4.1900 to 4.6003 gcm −3 with the addition of 1-5% of Er 2 O 3 NPs in the glass structure. The increase can be ascribed to increase in the overall molar weight of the glass due to incorporation of heavy Er 3+ ions. The XRD patterns revealed no presence of sharp peaks with the observed broad hump around 2θ = 20-30° indicating the glassy and amorphous nature of the studied glasses. The FTIR spectra showed absorption with peaks around 1362-1385 cm −1 , 1221-1250 cm −1 , 655-689 cm −1 and 602-630 cm −1 wave number ranges, indicating the presences of H 3 BO 3 , SiO 4 , BO 3 , TeO 3 and TeO 4 structural units in the glass system. The microstructural nature observed in the glass morphology showed nanoparticle agglomerations in the glasses. The ultrasonic velocities, elastic moduli, microhardness, Poisson ratio, softening and Debye's temperatures, thermal expansion coefficient as well as other important parameters were calculated from the density and ultrasonic data. The values of the ultrasonic velocities, elastic moduli, Debye's temperature, softening temperature, thermal expansion coefficient and the acoustic impedance increased with increase in the Er 2 O 3 NPs concentration.

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Some Physical Characteristics of Tellurite Glasses and Tellurite Glass Ceramics

El-Mallawany

2023

The Physics of Advanced Optical Materials: Tellurite Glasses

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Physical properties, ligand field and Judd-Ofelt intensity parameters of bio-silicate borotellurite glass system doped with erbium oxide

Cited by 42 publications

References 48 publications

Zinc Tellurite Glass System Incorporated with Erbium Oxide and Silver Oxide as Ultra-Broad (S+C+L) Bands Optical Communication

Zinc Tellurite Glass System Incorporated with Erbium Oxide and Silver Oxide as Ultra-Broad (S+C+L) Bands Optical Communication

Structural, elastic and thermo-physical properties of Er2O3 nanoparticles doped bio-silicate borotellurite glasses

Some Physical Characteristics of Tellurite Glasses and Tellurite Glass Ceramics

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