On the origin of near-IR luminescence in SiO 2 glass with bismuth as the single dopant. Formation of the photoluminescent univalent bismuth silanolate by SiO 2 surface modification

Romanov, A. N.; Haula, E. V.; Шашкин, Д. П.; Vtyurina, D. N.; Корчак, В. Н.

doi:10.1016/j.jlumin.2016.11.045

Cited by 18 publications

(4 citation statements)

References 34 publications

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“…This is not surprising taking into account previous reports 3 , 17 , 18 where it was shown that the NIR PL and absorption bands at 1440, 830, 375 (B1) and 415 nm (B2) belong to the same centre. This observation, in principle, does not contradict the assumption that the Bi + ion is responsible for the NIR PL in this material 19 .…”

Section: Resultsmentioning

confidence: 46%

On the nature of photoluminescence in Bismuth-doped silica glass

Laguta

Hamzaoui

Bouazaoui

et al. 2017

Sci Rep

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We report on the investigation of Bismuth-doped pure silica glass without other co-dopant by the tech- nique of magnetic circular dichroism (MCD), which allows the direct probing of the ground state of optical centres. Taking into account the results of conventional optical spectroscopy, we show that the observed MCD bands belong to the centre responsible for the red photoluminescence in this material. Measurements of the temperature and field dependences indicate that the MCD effect is caused by the even-electron system. This, however, opposes the widespread opinion that Bi2+ ions are the origin of red photoluminescence in Bismuth-doped silica glasses. On the other hand, the lasing centre responsi- ble for the near infrared photoluminescence does not exhibit any magnetic optical activity connected to its ground state. As a consequence, we conclude that the ground state of lasing centre is a magnetic singlet with the effective spin S = 0.

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Section: Resultsmentioning

confidence: 46%

On the nature of photoluminescence in Bismuth-doped silica glass

Laguta

Hamzaoui

Bouazaoui

et al. 2017

Sci Rep

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“…This novel finding impelled many researchers to conduct a lot of relevant studies on Bi‐doped diverse glass matrix such as silicate, germanate, phosphate, borate, chalcogenide, fluoride, etc . However, previous reports manifest that multiple Bi‐active centers coexist in Bi‐doped glasses, so challenge remains to enhance and tune the Bi NIR emission in glasses due to the complicated luminescent behavior of Bi‐active centers …”

Section: Introductionmentioning

confidence: 99%

Manipulating Bi NIR emission by adjusting optical basicity, boron and aluminum coordination in borate laser glasses

et al. 2017

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Bismuth‐doped (Bi) glasses and fibers have raised considerable attention for broadband emission and tunable fiber lasers in the near infrared (NIR) region. However, they suffer from low efficiency and it remains challenging to enhance Bi NIR emission. Here, we propose a facile way to enhance and tune the Bi NIR emission by adjusting optical basicity and modulating the boron and aluminum coordination in borate glasses. We find that BO4 and AlO5 species favor Bi NIR emission, right followed by the analyses of static emission spectra, the Fourier transform infrared (FT‐IR), and nuclear magnetic resonance (NMR) spectroscopy. Furthermore, abnormal Bi NIR luminescence phenomenon and boron anomaly were observed, which are attributed to the synthetic effect of B and Al coordination transformation. Besides, we find that BO4 tetrahedron plays a major role in enhancing Bi NIR emission at low Al content, while AlO5 hexahedron group will dominate at high Al concentration. Our investigation may give an insight into the luminescent behaviors of Bi in borate glasses and contribute to improving the performance of Bi‐doped fiber and fiber lasers in future.

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“…Since then, research attention is focused on the investigation related to the luminescence properties of Bi‐doped glasses, which provides information on the nature of the Bi active NIR‐luminescent center (BAC) . That is why the development of materials containing a single optical center is crucial to study the origin of the NIR PL in Bi‐doped silica glasses without complications related to overlapping of absorption and PL bands and/or interaction between different optical centers . However, the Bi‐activated glasses have been widely prepared using melt‐quenching or modified chemical vapor deposition (MCVD) methods, that led to multicomponents glasses containing multiple optical BACs .…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Structural and Optical Properties of Bismuth‐Doped Sol‐Gel‐Derived Phosphosilicate Glasses

Hamzaoui

Kinowski

Razdobreev

et al. 2018

Physica Status Solidi (a)

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Bismuth‐doped glasses are attractive materials for the development of new optical amplifiers and tunable laser sources. In this paper, Bi‐doped phosphosilicate glasses are prepared using the sol‐doping technique in combination with shaping using cold isostatic pressing. After a first drawing at high temperature (2000 °C), the obtained glass cane presents a wide near infrared (NIR) photoluminescence band under visible excitation. The authors show that this NIR optical activity, connected to phosphorus center, is preserved after a second drawing into a conventional optical fiber. These results confirm the potentialities of this synthesis approach for the fabrication of Bi‐activated optical fibers.

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On the origin of near-IR luminescence in SiO 2 glass with bismuth as the single dopant. Formation of the photoluminescent univalent bismuth silanolate by SiO 2 surface modification

Cited by 18 publications

References 34 publications

On the nature of photoluminescence in Bismuth-doped silica glass

On the nature of photoluminescence in Bismuth-doped silica glass

Manipulating Bi NIR emission by adjusting optical basicity, boron and aluminum coordination in borate laser glasses

Synthesis, Structural and Optical Properties of Bismuth‐Doped Sol‐Gel‐Derived Phosphosilicate Glasses

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