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

Fiber Optics Research Center of the Russian Academy of Science, 38 Vavilov St., 119333, Moscow, Russia.
Optics Express (Impact Factor: 3.49). 09/2011; 19(20):19551-61. DOI: 10.1364/OE.19.019551
Source: PubMed


For the first time, 3-dimensional luminescence spectra (luminescence intensity as a function of the excitation and emission wavelengths) have been obtained for bismuth-doped optical fibers of various compositions in a wide spectral range (450-1700 nm). The bismuth-doped fibers investigated have the following core compositions: SiO(2), GeO(2), Al-doped SiO(2), and P-doped SiO(2). The measurements are performed at room and liquid nitrogen temperatures. Based on the experimental results, the positions of the low-lying energy-levels of the IR bismuth active centers in SiO(2)- and GeO(2)-core fibers have been determined. Similarity of the energy-level schemes for the two core compositions has been revealed.

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Available from: Sergei V Firstov, Sep 05, 2014
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    • "The measurements of luminescence spectra were carried out separately in the ranges of  ex = (450-1700) nm and  ex = (250-900) nm. In the first range, luminescence in single-mode and multimode optical fibers (outer diameter 125 microns) was excited by a supercontinuum fiber laser system (Fianium, UK) and measured by an HP 71450B spectrum analyzer and by an SP2000 Spectrometer of Ocean Optics [27]. "
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    ABSTRACT: The current state of the art in infrared Bi-doped fiber laser research is reviewed. The relevant fiber glass compositions and fiber technologies are introduced. Lasers operating on transitions ranging from 1.15 to 1.55 μm occurring in the bismuth active centers and their energy level schemes are discussed on the basis of the spectroscopic properties of these centers. Continuous-wave fundamental-mode power levels ranging from a few mW near 1.55 μm up to 16 W near 1.16 μm and 22 W near 1.46 μm have been demonstrated in recent years.
    IEEE Journal of Selected Topics in Quantum Electronics 09/2014; 20(5):1-15. DOI:10.1109/JSTQE.2014.2312926 · 2.83 Impact Factor
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    • "(3) An aluminum-free silica (SiO 2 ) glass that is remarkable for its simple composition. The luminescent and laser properties of SiO 2 :Bi preforms and fibers made by powder-in-tube melting have been described in [11] [12]. "
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    ABSTRACT: This paper draws attention to short (1–15 s)-lifetime infrared emission in different bismuth-doped oxide glasses. The sharp differences between the excitation and emission spectra for short- and long-lifetime luminescence clearly show that the short-lifetime emission is due to an individual type of bismuth-associated center
    Laser Physics 08/2013; 23. DOI:10.1088/1054-660X/23/10/105803 · 1.03 Impact Factor
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    • "For the wavelengths longer than 1000 nm the lifetime values are several hundred microseconds, for shorter wavelengths they are 3–50 microseconds. A detailed discussion of the luminescence properties of Bi-doped fibers can be found in [27]. "
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    ABSTRACT: Bismuth-doped optical glasses emit NIR luminescence in an ultrabroad spectral region of 1000-2000 nm. It makes Bi-doped glasses and glass optical fibers a promising active medium for the creation of Bi-doped fiber lasers and broadband optical amplifiers for this spectral region. Since the first fabrication of Bi-doped fibers in 2005 a large number of papers devoted to the development of Bi-doped fiber lasers and optical amplifiers have been published. It has been shown that Bi-doped fibers are a new breakthrough in active laser materials.
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