Structure of Glasses of the Li2O–K2O–GeO2 System: Raman Spectroscopic Data

Королева, О. Н.; Korobatova, N. M.; Штенберг, М. В.; Иванова, Т. Н.

doi:10.1134/s0016702919030054

Cited by 12 publications

(8 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As Al powder content changes from 0 to 4 mol%, no obvious variation is observed in these bands. However, when the Al powder content continues to increase and reaches 22 mol%, the Raman peak located at 450 cm −1 gradually shifts to 470 cm −1 , which is characterized as vibrations of five‐coordinated atoms Ge(V) or the vibrations of Ge (IV)–O–Ge (IV) in the three‐membered rings 39–41 . Moreover, the band intensity of 535 cm −1 increases notably as compared to 450 cm −1 .…”

Section: Resultsmentioning

confidence: 97%

“…The 450 cm −1 can be attributed to the symmetric stretching vibrations of Ge(IV)–O–Ge(IV) in the six or four‐membered rings 38 . The latter can be assigned to the vibrations of Ge(IV)–O–Ge(IV) in the three‐membered rings or symmetric vibrations of Ge(IV)–O–Ge(VI) 39–41 . As Al powder content changes from 0 to 4 mol%, no obvious variation is observed in these bands.…”

Section: Resultsmentioning

confidence: 99%

“…However, when the Al powder content continues to increase and reaches 22 mol%, the Raman peak located at 450 cm −1 gradually shifts to 470 cm −1 , which is characterized as vibrations of five-coordinated atoms Ge(V) or the vibrations of Ge (IV)-O-Ge (IV) in the three-membered rings. [39][40][41] Moreover, the band intensity of 535 cm −1 increases notably as compared to 450 cm −1 . This manifests that partial six-or four-GeO 4 -membered rings have transformed into three-GeO 4 -membered rings and the GeO 5 or GeO 6 groups.…”

Section: The Evolution Of Glass Local Structure Via Metal Reductionmentioning

confidence: 92%

“…38 The latter can be assigned to the vibrations of Ge(IV)-O-Ge(IV) in the three-membered rings or symmetric vibrations of Ge(IV)-O-Ge(VI). [39][40][41] As Al powder content changes from 0 to 4 mol%, no obvious variation is observed in these bands. However, when the Al powder content continues to increase and reaches 22 mol%, the Raman peak located at 450 cm −1 gradually shifts to 470 cm −1 , which is characterized as vibrations of five-coordinated atoms Ge(V) or the vibrations of Ge (IV)-O-Ge (IV) in the three-membered rings.…”

Section: The Evolution Of Glass Local Structure Via Metal Reductionmentioning

confidence: 96%

See 3 more Smart Citations

Ultra‐broadband and thermally stable NIR emission in Bi‐doped glasses and fibers enabled by a metal reduction strategy

et al. 2023

View full text Add to dashboard Cite

Bismuth (Bi)‐doped glasses with broadband near‐infrared (NIR) emission have been drawing increasing interest due to their potential applications in tunable fiber lasers and broadband optical amplifiers. Yet, the implementation of highly efficient and ultra‐broadband Bi NIR emission covering the whole telecommunication window remains a daunting challenge. Here, via a metal reduction strategy to simultaneously create a chemically reductive environment during glass melting and enhance the local network rigidity, a super broadband (FWHM ≈ 600 nm) NIR emission covering the entire telecommunications window with greatly enhanced intensity was achieved in Bi‐doped germanate glasses. More importantly, due to the excellent thermal stability, the super broadband Bi NIR emission can be well retained after the glass was drawn into an optical fiber. Furthermore, the transmission loss of 0.066 dB/cm at 1310 nm and an obvious broadband amplified spontaneous emission spectrum spanning a range of 1000–1600 nm were observed in this fiber. This work can strengthen our comprehension of the complicated Bi NIR luminescence behaviors and offer a feasible and universal way to fabricate tunable fiber lasers and broadband optical amplifiers based on Bi‐doped multicomponent glasses.

show abstract

Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

Section: The Evolution Of Glass Local Structure Via Metal Reductionmentioning

confidence: 92%

Section: The Evolution Of Glass Local Structure Via Metal Reductionmentioning

confidence: 96%

See 2 more Smart Citations

Ultra‐broadband and thermally stable NIR emission in Bi‐doped glasses and fibers enabled by a metal reduction strategy

et al. 2023

View full text Add to dashboard Cite

show abstract

“…49,50 A weak peak at 860 cm À1 arises from the stretching vibrations of Ge (IV) tetrahedra with one nonbridging oxygen (Ge 3 units). 46,51 The peak appearing at around 340 cm À1 corresponds to the O-Ge-O deformation mode within the network. 46,48 As the Al 2 O 3 content changes from 0 to 5 mol%, no significant changes were observed in these bands, except for a slight enhancement of the peak intensity at 530 and 602 cm À1 .…”

Section: Resultsmentioning

confidence: 99%