Discussion on the origin of NIR emission from Bi-doped materials

Peng, Mingying; Dong, Guoping; Wondraczek, Lothar; Zhang, Liaolin; Zhang, Na; Qiu, Jianrong

doi:10.1016/j.jnoncrysol.2010.11.086

Cited by 182 publications

(149 citation statements)

References 58 publications

(163 reference statements)

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“…Серьезным препятствием на пути совершенствования висмутовых лазеров и усилителей является отсутствие адекватной модели ИК висмутового активного центра (BAC) в оптических средах. Ни одна из обсуждаемых в литературе моделей (их достаточно полный перечень можно найти в обзоре [9]) не удовлетворяет всем имеющимся на сегодняшний день экспериментальным данным (см., напр., обзор [10]). BAC наилучшим образом проявляют свои усилительные и генерационные свойства при условии малой концентрации висмута (обычно менее 0.02 ат.%), и, следовательно, самих BAC.…”

Section: Introductionunclassified

Combined excitation-emission spectroscopy of bismuth active centers in optical fibers

Firstov¹,

Khopin²,

Bufetov³

et al. 2011

Opt. Express

189

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Section: Introductionunclassified

Combined excitation-emission spectroscopy of bismuth active centers in optical fibers

Firstov¹,

Khopin²,

Bufetov³

et al. 2011

Opt. Express

189

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“…Furthermore, the direct measurements of the valence state of bismuth ions with traditional instrumental approaches, e.g., electron energy loss spectroscopy (EELS), extended x-ray absorption fine structure (EXAFS) or X-ray photoelectron spectroscopy (XPS), may cause some artifacts since the valence state of bismuth species can be changed when irradiated with high energy beams such as electrons, X-ray, c-ray, or fs laser. [20][21][22][23][24][25] 39 Single bismuth center with four different types is proposed for NIR luminescence in Bi-doped aluminosilicate optical fibers. 54 Bi þ and Bi 0 together were ascibed to contribute to the NIR luminescence.…”

mentioning

confidence: 99%

Multifunctional tunable ultra-broadband visible and near-infrared luminescence from bismuth-doped germanate glasses

Zhou

Tan

et al. 2013

Journal of Applied Physics

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Here, we present three facile approaches to achieve wavelength tunable luminescence in the same host material with single dopant, i.e., by modulating doping level, preparation temperature, and atmosphere. Based on these methods, ultra-broadband tunable near-infrared luminescence with the largest full width at half maximum of about 500 nm covering the whole windows of optical communication has been obtained in bismuth-doped germanate glasses. Wavelength tunable luminescence is also observed with the change of excitation wavelength. Systematical strategy was followed to approach the physical origin of the near-infrared luminescence and we proposed that three different bismuth active centers contribute to the near-infrared luminescence in the germanate glasses. A comprehensive explanation for the tunable luminescence is given, combining the concentration, energy transfer, and chemical equilibrium of these active centers in the glasses. With the increase of melting temperatures and the increase of reducing extent of the preparation atmosphere, bismuth species transform from Bi 3þ to Bi 2þ , Bi þ , Bi 0 and bismuth clusters, and then to bismuth colloid. Of particular interest is that red tunable luminescence was also observed by modulating doping level, preparation atmosphere, and excitation wavelength. Besides, the trapped-electron centers in germanate glasses can interact with bismuth species of high valence states leading to the formation of bismuth active centers of low valence states and the decrease of trapped-electron centers. This tunable ultra-broadband luminescence is helpful for a better understanding of the origin of the near-infrared luminescence in Bi-doped glasses and may have potential applications in varieties of optical devices. V C 2013 American Institute of Physics. [http://dx

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“…Unfortunately, none of these models show comprehensive evidences. 10 significant challenge is the development of broadband application for BEDF, Zinat and J. Zhang did some pioneer work in the spectral characterization of BEDF. However, only the spectral property of BEDF was specified under single 830 nm pumping, 13 in which only one or two dominant luminescence bands were observed.…”

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confidence: 99%

Enhanced broadband near-IR luminescence and gain spectra of bismuth/erbium co-doped fiber by 830 and 980 nm dual pumping

et al. 2017

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Discussion on the origin of NIR emission from Bi-doped materials

Cited by 182 publications

References 58 publications

Combined excitation-emission spectroscopy of bismuth active centers in optical fibers

Combined excitation-emission spectroscopy of bismuth active centers in optical fibers

Multifunctional tunable ultra-broadband visible and near-infrared luminescence from bismuth-doped germanate glasses

Enhanced broadband near-IR luminescence and gain spectra of bismuth/erbium co-doped fiber by 830 and 980 nm dual pumping

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