Spectral properties of ultra-low thermal expansion Er3+/Yb3+ co-doped phosphate glasses

Cheng, Yongguang; Yu, Chunlei; Han, Dong; Wang, Shikai; Shao, Chongyun; Sun, Yan; Sun, Shiyu; Shen, Yue; Cheng, Jing; Hu, Lili

doi:10.1016/j.ceramint.2023.02.202

Cited by 12 publications

(4 citation statements)

References 38 publications

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“…Remarkably, low CTE values have been also reported for Ybdoped aluminophosphate glasses likely benefiting from the high field strength of Yb 3+ ions, besides other constituents such as Al 3+ . 42,43 Considering the O 1s XPS data discussed herein, the degree of depolymerization does not seem to be the main factor impacting the CTE. This is because the Nd and Gd glasses had higher NBO content than the Ba glass (Table 3) and yet exhibited lower CTE values than the Ba reference, whereas the Yb glass then had lower NBO content but showed the lowest CTE.…”

Section: Measurementsmentioning

confidence: 72%

“…Consistent with such report, the small radius Yb 3+ ions herein appear particularly suited for achieving the low CTE. Remarkably, low CTE values have been also reported for Yb-doped aluminophosphate glasses likely benefiting from the high field strength of Yb 3+ ions, besides other constituents such as Al 3+ . , …”

Section: Resultsmentioning

confidence: 99%

“…Remarkably, low CTE values have been also reported for Yb-doped aluminophosphate glasses likely benefiting from the high field strength of Yb 3+ ions, besides other constituents such as Al 3+ . 42 , 43 …”

Section: Resultsmentioning

confidence: 99%

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Impact of Lanthanide (Nd³⁺, Gd³⁺, and Yb³⁺) Ionic Field Strength on the Structure and Thermal Expansion of Phosphate Glasses

Jiménez,

Amesimenu,

Thomas

2024

J. Phys. Chem. B

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Phosphate glasses containing Nd 3+ , Gd 3+ , and Yb 3+ as lanthanide ions are attractive for applications in laser materials, phototherapy lamps, and solar spectral converters. The composition−structure−property relation in this type of glass system is thus of interest from fundamental and applied perspectives. In this work, the impact of the differing ionic radius of Nd 3+ , Gd 3+ , and Yb 3+ and consequent field strength on the physical properties of phosphate glasses is investigated, focusing ultimately on thermal expansion effects. The glasses were made by melting with a fixed concentration of the lanthanide ions having 50P 2 O 5 −46BaO−4Ln 2 O 3 nominal compositions (mol %) with Ln = Nd, Gd, and Yb. The investigation encompassed measurements by X-ray diffraction (XRD), optical spectroscopy, density, X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and dilatometry. XRD supported the amorphous nature of the glasses, whereas absorption and photoluminescence spectra showed the optical features of the Nd 3+ , Gd 3+ , and Yb 3+ ions in the glasses. Oxygen speciation by XPS indicated an increase in nonbridging oxygens for the larger radii Nd 3+ and Gd 3+ ions relative to the host, contrasting with Yb 3+ . Phosphorus XPS analysis further supported the hypothesis that the P 2p binding energies of the glasses increased with the cation field strength of the lanthanides. The Raman spectra were interpreted based on glass depolymerization effects and the impact of Ln 3+ ions with high field strength. Particularly, the band position of the symmetric out-of-chain nonbridging oxygen stretch, ν s (PO 2 − ), shifted to higher frequencies correlating with the Ln 3+ field strength. Dilatometry ultimately revealed a steady decrease in the coefficient of thermal expansion for the glasses, which correlated linearly with Ln 3+ field strengths and thus indicated to sustain increased glass rigidities. The various analyses performed thus illuminated the structural foundation of the thermomechanical behavior of the glasses connected with changes in the Ln 3+ field strengths.

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Section: Measurementsmentioning

confidence: 72%

Section: Resultsmentioning

confidence: 99%

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Impact of Lanthanide (Nd³⁺, Gd³⁺, and Yb³⁺) Ionic Field Strength on the Structure and Thermal Expansion of Phosphate Glasses

Jiménez,

Amesimenu,

Thomas

2024

J. Phys. Chem. B

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“…The thermal shock resistance in phosphate glasses has only been studied in the compositions that have application as laser hosts, and the first studies of this property in phosphate laser glasses were reported by Cerqua et al, whereby the authors evaluated the resistance of the surface of ion-exchanged glasses to cracking when submitted to temperature differences [5]. Some similar methodology was later employed by Jiang et al in Er 3+ doped phosphate glasses [6], however, although reports on properties of laser glasses have regularly mentioned the determined thermal shock resistance [1], [7], [8], there has not yet been systematic studies on the reasons by which this property is influenced by composition or structure. In this work, we present a study on the thermal-mechanical resistance of a series of alumino-phosphate glasses, for which the alumina content is increased and the metaphosphate compositional line maintained at the expense of reducing the amount of glass modifier elements, Na, K and Ba.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Thermal Shock Resistance of Neodymium Doped Alumino-Phosphate Laser Glasses

Guillet,

Jiménez-Riobóo,

Munoz

2023

Glass Eur

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The resistance to thermal shock is one of the main properties to be considered in the design of glasses for their application as high power and high energy laser glasses. Neodymium doped phosphate glasses have inherent spectroscopic advantages for their use as laser hosts, however, their rather low mechanical performance can be a limiting factor for their use. It is very important to characterise the thermo-mechanical resistance of proprietary phosphate glass compositions as laser glasses, however, it is not common to find systematic studies on the influence of glass composition on the thermal shock resistance in phosphate glasses, which is defined as the mechanical resistance of the material to the stresses generated by thermal fluctuations. This includes considering the elastic properties of the medium, its thermal conductivity, the coefficient of thermal expansion and the fracture toughness. In the present work we have studied these properties in a series of alumino-phosphate glasses doped with Nd2O3 as a function of the alumina content. The above properties have been determined by Brillouin spectroscopy, dilatometry and thermal diffusivity, while the fracture toughness has been approached by means of a theoretical model that uses the calculation of the energy necessary to create a new surface while a pre-existing crack progresses. The results showed that the calculated fracture toughness agrees with the one of similar commercial laser glass compositions, and that the thermal shock resistance calculated in the metaphosphate glasses increases with the addition of Al2O3.

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Energy transfer characteristics of Nd3+/Yb3+-codoped phospho-silicate oxyfluoride glasses for ~ 1.0 µm laser applications

Vootukuru,

Hemakumar,

Renigunta

et al. 2023

Appl. Phys. A

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Spectral properties of ultra-low thermal expansion Er3+/Yb3+ co-doped phosphate glasses

Cited by 12 publications

References 38 publications

Impact of Lanthanide (Nd³⁺, Gd³⁺, and Yb³⁺) Ionic Field Strength on the Structure and Thermal Expansion of Phosphate Glasses

Impact of Lanthanide (Nd³⁺, Gd³⁺, and Yb³⁺) Ionic Field Strength on the Structure and Thermal Expansion of Phosphate Glasses

Assessment of the Thermal Shock Resistance of Neodymium Doped Alumino-Phosphate Laser Glasses

Energy transfer characteristics of Nd3+/Yb3+-codoped phospho-silicate oxyfluoride glasses for ~ 1.0 µm laser applications

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Spectral properties of ultra-low thermal expansion Er3+/Yb3+ co-doped phosphate glasses

Cited by 12 publications

References 38 publications

Impact of Lanthanide (Nd3+, Gd3+, and Yb3+) Ionic Field Strength on the Structure and Thermal Expansion of Phosphate Glasses

Impact of Lanthanide (Nd3+, Gd3+, and Yb3+) Ionic Field Strength on the Structure and Thermal Expansion of Phosphate Glasses

Assessment of the Thermal Shock Resistance of Neodymium Doped Alumino-Phosphate Laser Glasses

Energy transfer characteristics of Nd3+/Yb3+-codoped phospho-silicate oxyfluoride glasses for ~ 1.0 µm laser applications

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Impact of Lanthanide (Nd³⁺, Gd³⁺, and Yb³⁺) Ionic Field Strength on the Structure and Thermal Expansion of Phosphate Glasses

Impact of Lanthanide (Nd³⁺, Gd³⁺, and Yb³⁺) Ionic Field Strength on the Structure and Thermal Expansion of Phosphate Glasses