Faraday effect and spectral properties of high-concentrated rare earth oxide glasses in visible and near UV region

Petrovskiĭ, G. T.; Édelman, I. S.; Zarubina, T. V.; Malakhovskii, A.V.; Zabluda, V. N.; Ivanov, Misha

doi:10.1016/0022-3093(91)90153-w

Cited by 42 publications

(25 citation statements)

References 8 publications

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“…As expected, these values are close to the 4f 8 ↔ 4f 7 5d transition of the Tb 3+ ion (~250 nm)5, and are also similar to other reported values, e.g. , Tb 3+ -doped phosphate (~250 nm)27, borosilicate (~259–280 nm)28, aluminoborate (~250 nm)24, sodium borate (~220 nm)8 and fluorophosphate glasses (~217 nm)26.…”

Section: Resultssupporting

confidence: 91%

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Faraday rotation and photoluminescence in heavily Tb3+-doped GeO2-B2O3-Al2O3-Ga2O3 glasses for fiber-integrated magneto-optics

Gao

Winterstein-Beckmann

Surzhenko

et al. 2015

Sci Rep

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We report on the magneto-optical (MO) properties of heavily Tb3+-doped GeO2-B2O3-Al2O3-Ga2O3 glasses towards fiber-integrated paramagnetic MO devices. For a Tb3+ ion concentration of up to 9.7 × 1021 cm−3, the reported glass exhibits an absolute negative Faraday rotation of ~120 rad/T/m at 632.8 nm. The optimum spectral ratio between Verdet constant and light transmittance over the spectral window of 400–1500 nm is found for a Tb3+ concentration of ~6.5 × 1021 cm−3. For this glass, the crystallization stability, expressed as the difference between glass transition temperature and onset temperature of melt crystallization exceeds 100 K, which is a prerequisite for fiber drawing. In addition, a high activation energy of crystallization is achieved at this composition. Optical absorption occurs in the NUV and blue spectral region, accompanied by Tb3+ photoluminescence. In the heavily doped materials, a UV/blue-to-green photo-conversion gain of ~43% is achieved. The lifetime of photoluminescence is ~2.2 ms at a stimulated emission cross-section σem of ~1.1 × 10−21 cm2 for ~ 5.0 × 1021 cm−3 Tb3+. This results in an optical gain parameter σem*τ of ~2.5 × 10−24 cm2s, what could be of interest for implementation of a Tb3+ fiber laser.

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Section: Resultssupporting

confidence: 91%

“…In the framework of the Van Vleck-Hebb model of single-oscillator paramagnetic rare earth ions, the relationship between V and λ 2 can be written as2425In Eq. (1), g is the Landé factor, c the velocity of light, h is the Planck constant, C t is the effective transition probability, and λ t is the effective transition wavelength.…”

Section: Resultsmentioning

confidence: 99%

Faraday rotation and photoluminescence in heavily Tb3+-doped GeO2-B2O3-Al2O3-Ga2O3 glasses for fiber-integrated magneto-optics

Gao

Winterstein-Beckmann

Surzhenko

et al. 2015

Sci Rep

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“…Taking into account the results of studies of Faraday rotation in RE containing glasses [13][14][15][16][17][18] one can forecast that glasses in Tb 2 O 3 -B 2 O 3 -GeO 2 (TBG) system should manifest promising magneto-optical properties and can be effectively used in optical systems as Faraday rotators with the high Verdet constant. Since rotation angle is in direct dependence on magnetic field strength, path length inside rotator and its Verdet constant, magneto-optical material has to possess the maximum possible value of the Verdet constant allowing rotation of a plane of polarization on 45°at both the minimal magnetic field strength and the minimal path length of a beam in glass.…”

Section: Introductionmentioning

confidence: 99%

Borogermanate glasses with a high terbium oxide content

Savinkov

Сигаев

Golubev

et al. 2010

Journal of Non-Crystalline Solids

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“…First of all, these are allowed electric dipole transitions, typically occurring in the visible or ultraviolet spectral range. Namely, these transitions provide a high FR value in the visible range for compounds of several 4 f ions, e.g ., Tb 3+ , Dy 3+ and Eu 2+ , justifying the great attention paid to the FR of glasses containing such ions 51–55. On the other hand, glasses with 3 d ions even at low doping levels (a few mol%) often show an intense absorption in the visible range, making it difficult to study the FR in these glasses.…”

Section: Bibliographical Synopsismentioning

confidence: 99%

Oxide glasses with magnetic nanoparticles: transparent magnets (Faraday rotation and electron magnetic resonance studies)

Édelman

Kliava

2009

Physica Status Solidi (b)

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In the first part of this paper we outline the state of the art in the field of magnetic nanoparticles in oxide glasses. We describe the theoretical background of two complementary techniques used for the studies of the state of paramagnetic ions, clusters and magnetic particles in a diamagnetic matrix, viz., magnetooptical Faraday rotation (FR) and electron magnetic resonance (EMR) and we overview previous results obtained with these techniques for several glass systems. In the second part, we highlight the case of potassium-alumina-borate glasses -a glassy system where doping with paramagnetic oxides results in formation of magnetic particles at very low contents of paramagnetic additions: Fe 2 O 3 and MnO. In the special case when the ratio of the iron and manganese oxides in the charge is 3/2, magnetic nanoparticles with characteristics close to those of manganese ferrite are formed already at the first stage of the glass preparation. After thermal treatment all glasses show FR and EMR spectra attesting to the presence of superparamagnetic nanoparticles, characterized by relatively broad size and shape distributions. The formation of magnetic nanoparticles confers to these glasses magnetic and magnetooptical properties typical of magnetically ordered substances. At the same time, the glasses remain transparent in a part of the visible and near infrared spectral range and display a high FR value. Such properties make them particularly interesting for use as new media for various magneto-optical devices.

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Faraday effect and spectral properties of high-concentrated rare earth oxide glasses in visible and near UV region

Cited by 42 publications

References 8 publications

Faraday rotation and photoluminescence in heavily Tb3+-doped GeO2-B2O3-Al2O3-Ga2O3 glasses for fiber-integrated magneto-optics

Faraday rotation and photoluminescence in heavily Tb3+-doped GeO2-B2O3-Al2O3-Ga2O3 glasses for fiber-integrated magneto-optics

Borogermanate glasses with a high terbium oxide content

Oxide glasses with magnetic nanoparticles: transparent magnets (Faraday rotation and electron magnetic resonance studies)

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