Ion exchange as a new tool to evaluate and quantify glass homogeneity

Švecová, B.; Špirková, Jarmila; Nekvindová, Pavla; Míka, M.; Švecová, Lenka

doi:10.1016/j.jnoncrysol.2010.03.014

Cited by 9 publications

(19 citation statements)

References 8 publications

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“…Since the 70s, optoelectronics and waveguide technology exploited the refractive index increase given by the presence of Ag + ions in glass for fabricating planar and channel light waveguides, and it is worth noting that, starting from the pioneering works by Izawa [5] and Giallorenzi [6], the number of published papers dealing with the use of silver for this purpose rapidly increased, and has since then remained almost constant through the last 4 decades, indicating that there has always been room for further improvements in both the basic science and the application aspects of Agbased waveguides [7][8][9][10]. Nowadays, glass optical devices containing Ag waveguiding regions are commonly fabricated by the ion-exchange technique, and novel reviews on the topic have been also uninterruptedly published [11][12][13][14].…”

Section: Properties Of Silver-doped Glassesmentioning

confidence: 99%

Silver doping of glasses

Gonella

2015

Ceramics International

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Section: Properties Of Silver-doped Glassesmentioning

confidence: 99%

Silver doping of glasses

Gonella

2015

Ceramics International

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“…A comparison with other methods used in industrial practice is compiled in . Lately, a novel method to evaluate and quantify glass homogeneity has been proposed which rests on ion exchange …”

Section: Introductionmentioning

confidence: 99%

“…7 Lately, a novel method to evaluate and quantify glass homogeneity has been proposed which rests on ion exchange. 8 This study focuses on the bulk density of glass as a measure of glass homogeneity. Inhomogeneities are thus reflected by local density fluctuations.…”

Section: Introductionmentioning

confidence: 99%

Quantification of the thermal and chemical inhomogeneity of glasses

Bartolomey

Krogel

Conradt

et al. 2017

Int J of Appl Glass Sci

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Attempts to scientifically capture and quantify glass homogeneity have been based on optical methods, namely, on those based on the work of Christiansen, Raman, and Shelyubskii. In industrial practice, a number of further methods are in use. In this study, glass homogeneity is determined by the measurement of density fluctuation. The method of "density titration" proposed in earlier literature is used in an essentially improved procedure. In this method, the density distribution is determined for a representative ensemble of glass particles prepared from a bulk glass sample. The particles float on a heavy liquid which is diluted, step by step, by a miscible liquid of lower density. The particle fraction with density exceeding the density of the mixture sinks. When the method is performed on quenched or hyperquenched glass, then two types of inhomogeneities contribute to the overall homogeneity, i.e., thermal and chemical contributions. By two consecutive measurements, one performed on a sample of quenched glass, one on the same sample relaxed at T ¼ 0:9 T g , these contributions are clearly discriminated. Results are presented by an error function type distribution where the median marks the average density, and the standard deviation is adopted as a measure of glass homogeneity. K E Y W O R D Sglass quality, density titration, density gradients, quality control

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“…It continues to attract considerable interest for integrated optics (Chen et al, 2009;Boudrioua, 2006). Lithium Curie temperature is comparatively high (T c = 1210°C), below T c , the crystal becomes ferroelectric and belongs to the trigonal system (space group C3v) and above Tc, it becomes in its para electric stage and consequently it allows the utilization of numerous techniques for the waveguide development of lithium niobate (Kumar et al, 2010;Svecova et al, 2010a;2010b;Mackova et al, 2010;Bhatt et al, 2011;Nekvindova et al, 2012;Malinsky et al, 2012;Vacik et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

GROWTH OF YB<sup>3+</sup> DOPED LiNBO<sub>3</sub> CRYSTALS USING LASER HEATED PEDESTAL GROWTH METHOD

Boudour¹,

Boumaïza²,

Boudour³

2014

American Journal of Applied Sciences

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The growth of LN single crystals free from defects greatly doped with rare earth elements (RE 3+ ) and having a high optical quality is still an unresolved problem. Always, crystals of the niobate lithium contain a deficiency in lithium causing the appearance of intrinsic defects and thus a doping is required for the homogeneity. Our work was aimed to study the growth of Lithium niobate and their structural characterization, it focusses on congruent to stoichiometric Yb: LiNbO 3 (LN) crystals. These crystals were synthesized with different doping concentrations of Yb3+ (1.0, 2.0, 3.0, 4.0, 5.0 mol%) by the LHPG method which is faster, less expensive and clean, Three analysis techniques were used: Structural characterization made up 5.0 mol% by X-ray diffraction, Optical Microscopy and micro-Raman spectroscopy showed that the obtained material is single crystal, good optical quality and homogeneous. As we lnow, the results obtained with doping up to 5% are encouraging. Our approach provides excellent spectroscopic properties of crystals, low self-quenching property and can be used to applications such as solid-state laser.

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Ion exchange as a new tool to evaluate and quantify glass homogeneity

Cited by 9 publications

References 8 publications

Silver doping of glasses

Silver doping of glasses

Quantification of the thermal and chemical inhomogeneity of glasses

GROWTH OF YB<sup>3+</sup> DOPED LiNBO<sub>3</sub> CRYSTALS USING LASER HEATED PEDESTAL GROWTH METHOD

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