Faraday effect improvement by Dy3+-doping of terbium gallium garnet single crystal

Chen, Zhe; Yang, Lei; Yin, Hao; Wang, Xiangyong

doi:10.1016/j.jssc.2015.10.041

Cited by 24 publications

(10 citation statements)

References 24 publications

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“…The only modified parameters are the substitution value and the nature of the substituent. The superexchange interaction induced by co-doping is assumed to be at the origin of this behavior, as previously reported in TAG and TGG co-doped crystalline materials in the literature. ,,,,,, …”

Section: Resultsmentioning

confidence: 69%

“…Indeed, in 2012, researchers reported a (Tb 1– x R x ) 3 Al 5 O 12 (R = Y, Ce) transparent ceramic with a Verdet constant of −199.55 rad T –1 m –1 at 632 nm for the Ce 3+ -doped Tb 3 Al 5 O 12 , representing a significant increase of 16% compared with the Tb 3 Al 5 O 12 material . Later, in 2015 and 2016, researchers investigated the magneto-optical properties of TGG single crystals co-doped with different rare-earth (RE) trivalent ions and determined the Verdet constant measured at 632 nm of Nd:TGG (−145 rad T –1 m –1 ), Er:TGG (−145.3 rad T –1 m –1 ), Ce:TGG (−157.3 rad T –1 m –1 ), Dy:TGG (−178.6 rad T –1 m –1 ), Tm:TGG (−178.6 rad T –1 m –1 ), Pr:TGG (−200 rad T –1 m –1 ), and Ho:TGG (−214.9 rad T –1 m –1 ). − All these co-doped TGG single crystals have a higher Verdet constant in comparison with the TGG single crystal (−134 rad T –1 m –1 at 632 nm). In 2018, a series of TAG transparent ceramics co-doped with Ho, Tm, and Pr are also explored with Verdet constants reported at 632 nm of −183, −189.5, and −189.8 rad T –1 m –1 , respectively. − This unexpected behavior is attributed to the intrinsic properties of the co-doping elements used and associated with the Tb 3+ ions .…”

Section: Introductionmentioning

confidence: 99%

“…The substitution with other trivalent RE ions should then tend to decrease the Verdet constant. In the literature, assumptions to explain this phenomenon consider the influence of the crystal field, the spin–orbit coupling, and more especially the superexchange interaction ,,,,,, corresponding to the exchange of an electron via the overlapping of the orbitals between two cations separated by an anion. , …”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Superexchange Interaction Influence on the Faraday Effect in Terbium Fluorophosphate Glasses by Co-doping with Praseodymium, Dysprosium, and Holmium

et al. 2021

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The superexchange interaction on the Faraday effect is investigated in fluorophosphate glasses following the composition (in mol %) 35NaPO3–15BaF2–0.5(100 – x)TbF3–xREF3) with the levels of substitution x = 0, 1, 2, 3, 4, 5, 10, 25, 50, and 100 where RE = Pr, Dy, and Ho. Compositional, thermal, and optical properties were characterized by electron probe micro-analysis, density, differential scanning calorimetry, UV–visible transmission, and Verdet constant measurements, respectively. A precise control of the elementary composition and substitution is reported. An increase of Verdet constant for a constant total lanthanide concentration is observed at low levels of substitution. For glass series co-doped with praseodymium, holmium, and dysprosium substitution, the maximal Verdet constant at 600 nm is respectively −84.2, −84.5, and −84.5 rad T–1 m–1, comparative to the Verdet constant of Tb singly doped glass of −81.9 rad T–1 m–1. To the best of our knowledge, it is the first report of this effect in glassy materials and the first study of Faraday effect in solid materials with such a broad range of RE substitution. The origin of this phenomenon and the link between the superexchange interaction and the Zeeman effect causing the Faraday effect are discussed.

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Section: Resultsmentioning

confidence: 69%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Superexchange Interaction Influence on the Faraday Effect in Terbium Fluorophosphate Glasses by Co-doping with Praseodymium, Dysprosium, and Holmium

et al. 2021

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“…There are many more reports on promising magneto-active materials for the VIS-NIR region, which offer properties superior to the TGG crystal, most of them targeting on the enhancement of the Verdet constant. From the vast number of these materials, we may mention, e.g., NaTb(WO 4 ) 2 [136], TSLAG [81,137], Na 2 Tb 4 (MoO 4 ) 7 [138], LiCaTb 5 (BO 3 ) 6 [139], RE:TGG (RE= Ce [140], Pr [141], Ho [142], Tm [143] or Dy [144]), TbVO 4 [145], Nd:TbVO 4 [146], Na 2 Ce(MoO 4 ) 2 [147], TCZ [148,149], Tb 2 Hf 2 O 7 [150] or CeAlO 3 [151]. Table 2.…”

Section: Vis-nir Region (400 < λ < 1100 Nm)mentioning

confidence: 99%

Verdet Constant of Magneto-Active Materials Developed for High-Power Faraday Devices

et al. 2019

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We review the progress in the investigation of the Verdet constant of new magneto-active materials for the Faraday-effect-based devices used in high-power laser systems. A practical methodology for advanced characterization of the Verdet constant of these materials is presented, providing a useful tool for benchmarking the new materials. The experimental setup used for the characterization is a flexible and robust tool for evaluating the Faraday rotation angle induced in the magneto-active material, from which the Verdet constant is calculated based on the knowledge of the magnetic field and the material sample parameters. A general model for describing the measured Verdet constant data as a function of wavelength and temperature is given. In the final part of this review, we present a brief overview of several magneto-active materials, which have been to-date reported as promising candidates for utilization in the Faraday devices. This overview covers room-temperature investigations of the Verdet constant of several materials, which could be used for the ultraviolet, visible, near-infrared and mid-infrared wavelengths.

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“…Bismuth added iron garnet also proves a larger Faraday rotation than iron garnet in 0.8-1.7 µm. YIG are mainly used in microwave communication as well as designing of optically based devices like rotators (Chen et al, 2016a(Chen et al, , b, 2005. It shows high stability for temperature variation.…”

Section: Smentioning

confidence: 99%

Study of different magneto-optic materials for current sensing applications

Kumari

Chakraborty

2018

J. Sens. Sens. Syst.

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Abstract. This article discusses the properties of different diamagnetic and paramagnetic materials for a basic current/magnetic field sensor system set up with different relative orientations of analyzers and polarizers. The paper analyzes linearity ranges of different materials and their sensitivity for different wavelengths. Terbium doped glass (TDG), terbium gallium garnet (TGG), doped TGG and dense flint glass materials are used for analysis based on Faraday's rotation principle. TGG shows high Faraday rotation, temperature stability and high optical quality. Three ranges of the magnetic field have been chosen for performance analysis. The study reveals that doping of praseodymium (Pr3+) on TGG exhibits a better response at 532 nm as well as 1064 nm wavelengths than TGG. At 632.8 nm wavelength, cerium (Ce3+) doped terbium aluminum garnet (TAG) ceramic exhibits better resolution than others. The study has been done for performance analysis of different MO sensors applicable for measurement of various process parameters like current, displacement, and magnetic field.

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Faraday effect improvement by Dy3+-doping of terbium gallium garnet single crystal

Cited by 24 publications

References 24 publications

Superexchange Interaction Influence on the Faraday Effect in Terbium Fluorophosphate Glasses by Co-doping with Praseodymium, Dysprosium, and Holmium

Superexchange Interaction Influence on the Faraday Effect in Terbium Fluorophosphate Glasses by Co-doping with Praseodymium, Dysprosium, and Holmium

Verdet Constant of Magneto-Active Materials Developed for High-Power Faraday Devices

Study of different magneto-optic materials for current sensing applications

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