Tellurium-doped silica fibers: spectroscopic properties and nature of active centers

Zlenko, Alexander S.; Mashinsky, Valery M.; Sokolov, V. O.; Колташев, В. В.; Karatun, Nikita M.; Исхакова, Л. Д.; Semjonov, Sergey L.; Плотниченко, В. Г.

doi:10.1364/josab.33.000675

Cited by 7 publications

(6 citation statements)

References 31 publications

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“…Similarly, during the fiber drawing process, tellurium‐doped silica fibers drawn under an argon atmosphere show a formation of Te 2 0 dimers compared to fibers drawn in oxidizing conditions. [ 38 ] Although, in this case, the oxidation of Te 2 0 dimer causes a diminish of this peak under an oxidizing atmosphere, in our case, oxygen is removed quickly from the laser‐affected zone, leaving a plasma rich in terms of Te atoms under the laser irradiation.…”

Section: Resultsmentioning

confidence: 71%

“…[ 34–36 ] Another possible identification of this peak is TeO 3 2− (specifically the OH units in the hydrogen bonding of (TeO 3 ) 2− units [ 37 ] ) at the expense of those with higher wavenumbers, indicating that the glass network is progressively cleaved. A few other studies state that this peak may also be related to the formation of WO 3 crystals, [ 38,39 ] rhombohedral‐TeO 3 , [ 40 ] or β‐TeO 2 crystals. [ 41 ] Interestingly, this peak appears at every even pulse up to ten pulses and eventually disappears from Raman spectra when the femtosecond laser process is performed in an open‐air atmosphere.…”

Section: Resultsmentioning

confidence: 99%

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Formation Mechanism of Elemental Te Produced in Tellurite Glass Systems by Femtosecond Laser Irradiation

et al. 2023

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The formation of elemental trigonal tellurium (t‐Te) on tellurite glass surfaces exposed to femtosecond laser pulses is discussed. Specifically, the underlying elemental crystallization phenomenon is investigated by altering laser parameters in common tellurite glass compositions under various ambient conditions. Elemental crystallization of t‐Te by a single femtosecond laser pulse is unveiled by high‐resolution imaging and analysis. The thermal diffusion model reveals the absence of lattice melting upon a single laser pulse, highlighting the complexity of the phase transformation. The typical cross‐section displays three different crystal configurations over its depth, in which the overall thickness increases with each subsequent pulse. The effect of various controlled atmospheres shows the suppressing nature of the elemental crystallization, whereas the substrate temperature shows no significant impact on the nucleation of t‐Te nanocrystals. This research gives new insight into the elemental crystallization of glass upon femtosecond laser irradiation and shows the potential to fabricate functional transparent electronic micro/nanodevices.

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Section: Resultsmentioning

confidence: 71%

Section: Resultsmentioning

confidence: 99%

Formation Mechanism of Elemental Te Produced in Tellurite Glass Systems by Femtosecond Laser Irradiation

et al. 2023

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“…In 2016, Zlenko et al prepared two Te-doped SiO 2 holey fibers using the MCVD method under oxygen (STeO) and argon (STeAr) conditions. [127] Figure 32a shows the SEM image of the fiber cross-section. The diameters of the outer fiber, core, and holes were ≈ 120, 7, and 5 μm, respectively.…”

Section: Te-doped Glass Fibersmentioning

confidence: 99%

Section: Te-doped Glass Fibersmentioning

confidence: 99%

Main Group Elements Activated Near‐Infrared Photonic Materials

Dong,

Feng,

Qiu

et al. 2024

Laser & Photonics Reviews

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Near‐infrared (NIR) photonic materials find extensive applications across important fields such as telecommunications, laser radar, and atmospheric remote sensing. In particular, photonic materials activated by main group elements, which exhibit unique spectral features including ultra‐broadband tunable luminescence and long lifetime, have become rising stars in NIR emitting dopants. In this review, the energy level characteristics of the p‐electrons to gain insight into the fundamentals of the NIR optical response from the main group elements are first introduced. Next, the NIR luminescence properties of the main group elements are discussed. Then, the strategy for the design of main group elements activated materials with the desired properties based on local chemical environment engineering is proposed. In addition, recent advances in the applications of main group element (excluding bismuth) activated materials are highlighted. Furthermore, the key scientific issues that urgently need to be solved for such materials, such as the detailed luminescence mechanism are highlighted. Anticipation also extends to the future research trends in this exciting field, including the ways for enhancing luminescence efficiency and extending spectral region, and the efforts for implementing these advancements in novel cutting‐edge technologies like photovoltaics and biomedicine.

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“…Interest in glasses doped by elements with 5p and 6p electrons has noticeably increased after the discovery of infrared luminescence in Bi-doped silicate glasses [1] and the creation of fiber lasers on their base [2][3][4]. It is known now that such elements as Pb and Te can also form infrared-emitting centers when admixed to oxide glasses prepared in non-oxidizing conditions [5][6][7][8]. Such glasses are of interest as novel materials for tunable lasers and wideband amplifiers.…”

Section: Introductionmentioning

confidence: 99%

SnO-containing oxide glasses emitting in 1.0–2.0µm spectral range

et al. 2018

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Different SnO-containing oxide glasses with various net formers (silicate, phosphate, germanate, borate, and a number of mixed compositions) were investigated for the presence of near-infrared photoluminescence. It was found that SnO-containing silicate and germanate, and also a plurality of mixed glass compositions, exhibit wideband photoluminescence peaking at 1.5-1.6 µm and with lifetimes in the order of 100 µs. These glasses are interesting as promising active materials for widely tunable fiber lasers and wideband amplifiers.

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Tellurium-doped silica fibers: spectroscopic properties and nature of active centers

Cited by 7 publications

References 31 publications

Formation Mechanism of Elemental Te Produced in Tellurite Glass Systems by Femtosecond Laser Irradiation

Formation Mechanism of Elemental Te Produced in Tellurite Glass Systems by Femtosecond Laser Irradiation

Main Group Elements Activated Near‐Infrared Photonic Materials

SnO-containing oxide glasses emitting in 1.0–2.0µm spectral range

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