Rare-earth ion doped niobium germanate glasses and glass-ceramics for optical device applications

Marcondes, Lia Mara; Rodrigues, L C A; Cunha, Cristiano Ramos da; Gonçalves, Rogéria Rocha; Camargo, Andréa Simone Stucchi de; Cassanjes, Fábia Castro; Poirier, Gaël

doi:10.1016/j.jlumin.2019.05.012

Cited by 30 publications

(5 citation statements)

References 57 publications

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“…For example, low transition metal contents promote higher thermal stabilities against devitrification whereas higher contents close to the limit of the glass forming domain lead to a strong crystallization tendency with the formation of the perovskite bronze-like crystalline phase of the general formula A 2 M 8 O 21 , where A is an alkaline ion, mainly Na or K. 1,2,4,5 The optical properties which make these materials promising for photonic applications include their transparency in the middle infrared region up to 6 μm and the tunable rare earth visible and near infrared luminescent properties as a function of the M 2 O 5 content or the degree of crystallinity in these compositions. 2,3,6–9 However, besides the design of suitable glass compositions with the required physical specifications, photonic technologies and integrated optics also bring the need for a more precise control and/or modulation of the linear and non-linear optical properties at the microscale. Among many physical and chemical methodologies developed for such purposes, thermal poling, which can be understood as the application of a strong DC electric field onto a heated non-crystalline material (usually a glass), has attracted attention in the past few years.…”

Section: Introductionmentioning

confidence: 99%

Microscaled design of the linear and non-linear optical properties of tantalum germanate glasses by thermal poling

et al. 2022

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Section: Introductionmentioning

confidence: 99%

Microscaled design of the linear and non-linear optical properties of tantalum germanate glasses by thermal poling

et al. 2022

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“…The thermoluminescence characteristics of various rare-earth-doped glasses for highdose gamma dosimetry purposes have been studied in recent years [97][98][99][100][101][102][103][104][105][106][107][108][109][110][111]. Scientific research has mainly been focused on extending the saturation limit of dopants in glass matrixes and improving their dosimetry features by varying their composition and concentration.…”

Section: Discussion Of the Resultsmentioning

confidence: 99%

Ceramics, Glass and Glass-Ceramics for Personal Radiation Detectors

2021

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Different types of ceramics and glass have been extensively investigated due to their application in brachytherapy, radiotherapy, nuclear medicine diagnosis, radioisotope power systems, radiation processing of food, geological and archaeological dating methods. This review collects the newest experimental results on the thermoluminescent (TL) properties of crystalline and glassy materials. The comparison of the physico-chemical properties shows that glassy materials could be a promising alternative for dosimetry purposes. Furthermore, the controlled process of crystallization can enhance the thermoluminescent properties of glasses. On the other hand, the article presents information on the ranges of the linear response to the dose of ionizing radiation and on the temperature positions of the thermoluminescent peaks depending on the doping concentration with rare-earth elements for crystalline and glassy materials. Additionally, the stability of dosimetric information storage (fading) and the optimal concentration of admixtures that cause the highest thermoluminescent response for a given type of the material are characterized. The influence of modifiers addition, i.e., rare-earth elements on the spectral properties of borate and phosphate glasses is described.

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“…Make up for the lack of XRD, transmission electron microscopy and other means to observe the rare earth ions into the percentage of glass-ceramics. Embodies the probe properties of the rare earth ion, using the rare earth ion as a probe to probe the percentage of itself inside the glass ceramic [20][21][22][23][24] .…”

Section: Discussionmentioning

confidence: 99%

Probing the distribution of rare earth ions in glass-ceramics by the properties of Er3+ ion probes

Chen,

Cui,

Yang

et al. 2024

Preprint

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Glass and glass-ceramic samples with matrix of SiO2-PbF2 system were firstly prepared. The glass was transformed into glass-ceramics by heat treatment, and the effect of different heat treatment times in this process on the microenvironment of rare earth ions into the glass-ceramics was investigated. The proportion of Er3+ entering the glass-ceramics during heat treatment was calculated by using J-O theory combined with absorption spectroscopy using Er3+ as a probe. On the other hand, Er3+ was used as a probe to investigate and analyze the changes of the crystalline phase of the glass-ceramics by combining fluorescence spectra, absorption spectra, and XRD changes. The results show that the XRD patterns indicate that heat treatment of the precursor glass at the transition temperature produces rapid crystalline deposition of PbF2, but most of the rare earth ions are still present in the glass phase. And with the gradual increase of the heat treatment time, the rare earth ions in the glass phase gradually enter into the fluoride nanocrystals, but this process is not synchronized with the crystallization process.

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Rare-earth ion doped niobium germanate glasses and glass-ceramics for optical device applications

Cited by 30 publications

References 57 publications

Microscaled design of the linear and non-linear optical properties of tantalum germanate glasses by thermal poling

Microscaled design of the linear and non-linear optical properties of tantalum germanate glasses by thermal poling

Ceramics, Glass and Glass-Ceramics for Personal Radiation Detectors

Probing the distribution of rare earth ions in glass-ceramics by the properties of Er3+ ion probes

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