Role of PbO substitution by Bi2O3 on 1.47μm luminescence properties of Tm3+/Tb3+-doped Bi2O3–GeO2–Ga2O3 glass

Shi, Dong; Zhang, Ying; Qian, Qi; Chen, D.D.; Zhang, Q.Y.

doi:10.1016/j.jallcom.2010.02.200

Cited by 14 publications

(12 citation statements)

References 25 publications

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“…In the present case, a value of 3.3 × 10 −24 cm 2 s is obtained (300 K). This compares to typical data of glasses and glass ceramics that have been considered for similar applications, such as [17]. The high value of σ em τ promises large amplification gain and low oscillation threshold, and hence suggests further studies with the objective of application of Ni 2 -doped TBSA glass ceramics as a broadband gain medium for tunable lasers and amplifiers.…”

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confidence: 53%

Temperature dependence and quantum efficiency of ultrabroad NIR photoluminescence from Ni^2+centers in nanocrystalline Ba-Al titanate glass ceramics

2012

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Ultrabroad near-infrared (NIR) photoluminescence from Ni 2 -centers in nanocrystalline Ba-Al titanate glass ceramics was studied by temperature-dependent static and dynamic photoluminescence spectroscopy in the regime of 10 to 300 K. Photoluminescence covers the spectral range of about 1100 nm to >1600 nm with a typical bandwidth (FWHM) greater than 300 nm. For UV-LED excitation at 352 nm, an internal quantum efficiency of 65% is obtained. The excited state lifetime τ at room temperature is 39 μs. The stimulated emission cross section σ em is 8.5 × 10 −20 cm 2 , resulting in a practical figure of merit, σ em τ, of 3.3 × 10 −24 cm 2 s at room temperature. These properties suggest suitability as a broadband gain medium for tunable lasers and optical amplifiers. © 2012 Optical Society of America OCIS codes: 160.2540, 160.2750 3d transition metal ions such as Ni 2 , Co 2 , and Cr 4 doped into inorganic matrices have been a subject of interest for many years due to their broadband nearinfrared (NIR) photoluminescence (PL). In such materials, NIR PL arises from d-d transitions and is hence strongly dependent on ligand field and coordination [1][2][3][4][5]. While various efforts have been undertaken to make use of this property in next-generation broadband optical amplifiers for telecommunication and other applications, especially with Co 2 and Cr 4 , any breakthrough has so far been prevented by difficulties in stabilizing the specific valence and coordination state in a suitable matrix material [1,2]. From a practical point of view, Ni 2 species seem the most promising choice to approach this problem. In an inorganic matrix, they may be present in three different coordination states, tetrahedral (fourfold, VI Ni 2 ), trigonal (fivefold, V Ni 2 ) and octahedral (sixfold, VI Ni 2 ). Only VI Ni 2 has been known to provide efficient NIR emission [3][4][5]. Consequently, VI Ni 2 -containing glass ceramics and single crystalline materials have drawn continuous attention over the last decade [3][4][5]. Of these two materials classes, glass ceramics, produced by controlled nucleation and crystallization of a suitable precursor glass, combine the advantages of glasses and crystalline materials: depending on viscosity and crystallization temperature of the precursor glass, they can be processed into optical fiber, and depending on the type of precipitated crystal species, high quantum efficiency (QE) can be obtained [6][7][8]. As a prerequisite, however, crystal precipitation must occur in sufficiently high number density to ensure very low crystallite size and, hence, high optical transparency. In this setting, the number of available matrix candidates has been limited to only a few systems, which typically rely on rare raw materials or exhibit major process limitations (such as high liquidus temperature and high dynamic fragility).Recently, we reported on glasses of the type 30TiO 2 -30BaO-30SiO 2 -10Al 2 O 3 (TBSA, mol%) as a new matrix candidate [9]. In this system, nanocrystalline hollandite-type (BaAl 2 Ti 6 O 16 , sec...

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Temperature dependence and quantum efficiency of ultrabroad NIR photoluminescence from Ni^2+centers in nanocrystalline Ba-Al titanate glass ceramics

2012

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“…As is well known, the major factor that affects the efficiency of rare-earth fluorescence is the maximal phonon energy of the host material [25,26]. The larger the maximal phonon energy of the host material is, the higher the rate of nonradiative relaxation and the lower efficiency of fluorescence.…”

Section: B Upconversion Luminescencementioning

confidence: 99%

Laser oscillation of Yb³⁺:Er³⁺co-doped phosphosilicate microsphere [Invited]

Huang

et al. 2014

Appl. Opt.

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A fiber-taper-microsphere-coupled system was used to research the characteristics of laser oscillation and upconversion luminescence of Yb3+:Er3+ co-doped phosphosilicate (YECP) microspheres. The YECP microspheres were fabricated by melting the end of phosphosilicate filaments. Single- and multimode laser oscillation at 1535-1565 nm within the C-band were obtained. In addition, the output power of the single-mode laser at 1545.5 nm can be as high as 48.98 μW, which was achieved under pump power of 9.63 mW, and the side-mode suppression ratio was 51.49 dB. Upconversion fluorescence of Er3+ at 521, 532, and 544 nm also were measured, and the pump power dependence was studied. The fluorescence intensity was lower than that of Yb3+:Er3+ co-doped silica and oxyfluoride glass ceramic microspheres. Moreover, the physical mechanism of upconversion suppression and laser oscillation enhancement observed in our experiment was presented, which is beneficial to the preparation of rare-earth-doped microcavity lasers.

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“…It is known that, in general, the oxide glasses possess a good mechanical strength, chemical durability and thermal stability [1][2][3]. Among the different vitreous systems studied earlier, the PbO-GeO 2 glasses are technologically important because of their potential use as low loss optical glasses in the infrared region [4][5][6]. Moreover the study of lead-germanate glasses is of particular interest since they can be easily obtained into fiber form for their use in optoelectronics.…”

Section: Introductionmentioning

confidence: 99%

Structural and physical characteristics of CeO2–GeO2–PbO glasses and glass ceramics

Culea

Pop

Bosca

2010

Journal of Alloys and Compounds

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Role of PbO substitution by Bi2O3 on 1.47μm luminescence properties of Tm3+/Tb3+-doped Bi2O3–GeO2–Ga2O3 glass

Cited by 14 publications

References 25 publications

Temperature dependence and quantum efficiency of ultrabroad NIR photoluminescence from Ni^2+centers in nanocrystalline Ba-Al titanate glass ceramics

Temperature dependence and quantum efficiency of ultrabroad NIR photoluminescence from Ni^2+centers in nanocrystalline Ba-Al titanate glass ceramics

Laser oscillation of Yb³⁺:Er³⁺co-doped phosphosilicate microsphere [Invited]

Structural and physical characteristics of CeO2–GeO2–PbO glasses and glass ceramics

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Role of PbO substitution by Bi2O3 on 1.47μm luminescence properties of Tm3+/Tb3+-doped Bi2O3–GeO2–Ga2O3 glass

Cited by 14 publications

References 25 publications

Temperature dependence and quantum efficiency of ultrabroad NIR photoluminescence from Ni^2+centers in nanocrystalline Ba-Al titanate glass ceramics

Temperature dependence and quantum efficiency of ultrabroad NIR photoluminescence from Ni^2+centers in nanocrystalline Ba-Al titanate glass ceramics

Laser oscillation of Yb3+:Er3+co-doped phosphosilicate microsphere [Invited]

Structural and physical characteristics of CeO2–GeO2–PbO glasses and glass ceramics

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Laser oscillation of Yb³⁺:Er³⁺co-doped phosphosilicate microsphere [Invited]