Optical and magneto-optical properties of YIG and FeBO3

Andlauer, B.; Schneider, J.; Wettling, W.

doi:10.1007/bf00897217

Cited by 40 publications

(14 citation statements)

References 45 publications

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“…The relative deviations of the data from the obtained model ( 8 ) are <

, except of the wavelengths above

, where the error increases. As a next step, we have extracted several values of the specific Faraday rotation from the figures found in the available literature sources [ 25 , 44 , 57 , 62 , 63 ], and included them in the second plot, in the Figure 4 b. The deviation of the specific Faraday rotation values found in the available literature from the values given by the model ( 8 ) with the aforementioned fitted parameters is <

in the <

, as well as in the extrapolated >

spectral ranges.…”

Section: Resultsmentioning

confidence: 99%

“…In contrast with the Dy

ceramics, the CeF

crystal (yellow line) has a wide window of transparency ranging from

(the material’s cut-off wavelength is located at ∼

[ 28 ], which is not detectable with the spectrophotometer that was used) to

. The YIG crystal (blue line) is transparent from

to ∼

[ 13 , 42 , 43 , 44 ]. The transparency windows of these materials nicely match the emission wavelengths of some of the visible, near-IR and, most interestingly for our investigation, some of the Tm

, Ho

or Er

-doped lasers emitting around 2 and

wavelengths mentioned in the introduction [ 1 , 8 , 9 , 45 ].…”

Section: Methods Of Investigationmentioning

confidence: 99%

“…Description of the Faraday rotation dispersion of the YIG crystal represents a very complex problem and, despite the considerable scientific effort that has been put in, the understanding of its Faraday rotation spectra is still far from complete [ 13 , 42 , 44 , 53 ]. The main source of complexity originates in the fact that the Fe

ions occupy two different sites in the crystal lattice, the octahedral and the tetrahedral, giving rise to a rather complicated optical and magneto-optical spectra [ 43 , 54 ].…”

Section: Methods Of Investigationmentioning

confidence: 99%

“…The deviation of the specific Faraday rotation values found in the available literature from the values given by the model ( 8) with the aforementioned fitted parameters is <8% in the <1.8 µm, as well as in the extrapolated >3.5 µm spectral ranges. [rad/m] YIG ceramics [25] YIG crystal [44] YIG crystal [57] YIG crystal [62] YIG crystal [63] (b)…”

Section: Yig Crystalmentioning

confidence: 99%

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Faraday Rotation of Dy2O3, CeF3 and Y3Fe5O12 at the Mid-Infrared Wavelengths

et al. 2020

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The relatively narrow choice of magneto-active materials that could be used to construct Faraday devices (such as rotators or isolators) for the mid-infrared wavelengths arguably represents a pressing issue that is currently limiting the development of the mid-infrared lasers. Furthermore, the knowledge of the magneto-optical properties of the yet-reported mid-infrared magneto-active materials is usually restricted to a single wavelength only. To address this issue, we have dedicated this work to a comprehensive investigation of the magneto-optical properties of both the emerging (Dy2O3 ceramics and CeF3 crystal) and established (Y3Fe5O12 crystal) mid-infrared magneto-active materials. A broadband radiation source was used in a combination with an advanced polarization-stepping method, enabling an in-depth analysis of the wavelength dependence of the investigated materials’ Faraday rotation. We were able to derive approximate models for the examined dependence, which, as we believe, may be conveniently used for designing the needed mid-infrared Faraday devices for lasers with the emission wavelengths in the 2-μm spectral region. In the case of Y3Fe5O12 crystal, the derived model may be used as a rough approximation of the material’s saturated Faraday rotation even beyond the 2-μm wavelengths.

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“…The relative deviations of the data from the obtained model ( 8 ) are <

, except of the wavelengths above

in the <

, as well as in the extrapolated >

spectral ranges.…”

Section: Resultsmentioning

confidence: 99%

“…In contrast with the Dy

ceramics, the CeF

crystal (yellow line) has a wide window of transparency ranging from

(the material’s cut-off wavelength is located at ∼

[ 28 ], which is not detectable with the spectrophotometer that was used) to

. The YIG crystal (blue line) is transparent from

to ∼

[ 13 , 42 , 43 , 44 ]. The transparency windows of these materials nicely match the emission wavelengths of some of the visible, near-IR and, most interestingly for our investigation, some of the Tm

, Ho

or Er

-doped lasers emitting around 2 and

wavelengths mentioned in the introduction [ 1 , 8 , 9 , 45 ].…”

Section: Methods Of Investigationmentioning

confidence: 99%

ions occupy two different sites in the crystal lattice, the octahedral and the tetrahedral, giving rise to a rather complicated optical and magneto-optical spectra [ 43 , 54 ].…”

Section: Methods Of Investigationmentioning

confidence: 99%

Section: Yig Crystalmentioning

confidence: 99%

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Faraday Rotation of Dy2O3, CeF3 and Y3Fe5O12 at the Mid-Infrared Wavelengths

et al. 2020

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“…On the other hand, FeBO 3 is a uniaxial crystal with the optical axis of [0,0,1] direction [8]. Thus, detuning from the normal incidence results in the appearance of strong optical birefringence that significantly influences and limits the value [9][10][11] and even changes the sign of the Faraday effect [12,13].…”

mentioning

confidence: 99%

Birefringence-mediated enhancement of the magneto-optical activity in anisotropic magnetic crystals

Ignatyeva¹,

Voronov²,

Shilina³

et al. 2021

Preprint

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Antiferromagnets are promising for magneto-optical light control that could be performed at THz frequencies via excitation of the quasi-antiferromagnetic spin modes. However, most of the antiferromagnetic crystals possess optical anisotropy that is usually treated as an unfavorable condition for the magneto-optical measurements: optical anisotropy is known to diminish the Faraday rotation with respect to the case of the isotropic medium. Here we show that the situation could be quite opposite: a phenomenon of birefringence mediated enhancement of the magneto-optical activity appears if the orientation of the incident light linear polarization is chosen properly. The present study relies on the experimental, analytical, and numerical studies of iron borate FeBO3 crystals. We demonstrate a significant increase of the magneto-optical activity by more than 10 times for 70 • angle between light polarization and incidence plane instead of commonly-used p-or s-polarizations. It provides a unique sensitivity to the in-plane magnetization of FeBO3 that is crucial for the pumpprobe studies, magneto-optical microscopy, and others. The most important practical application of the observed phenomenon is the light modulation with up to 100% efficiency at THz frequencies. The approach is applicable to other types of birefringent crystals with the magneto-optical response.

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Advanced Materials and Device Architectures for Magnetooptical Spatial Light Modulators

Kharratian

Ürey

Onbaşlı

2019

Advanced Optical Materials

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Faraday and Kerr rotations are magnetooptical (MO) effects used for rotating the polarization of light in transmission and reflection from a magnetized medium, respectively. MO effects combined with intrinsically fast magnetization reversal, which can go down to a few tens of femtoseconds or less, can be applied in magnetooptical spatial light modulators (MOSLMs) promising for nonvolatile, ultrafast, and high‐resolution spatial modulation of light. With the recent progress in low‐power switching of magnetic and MO materials, MOSLMs may lead to major breakthroughs and benefit beyond state‐of‐the‐art holography, data storage, optical communications, heads‐up displays, virtual and augmented reality devices, and solid‐state light detection and ranging (LIDAR). In this study, the recent developments in the growth, processing, and engineering of advanced materials with high MO figures of merit for practical MOSLM devices are reviewed. The challenges with MOSLM functionalities including the intrinsic weakness of MO effect and large power requirement for switching are assessed. The suggested solutions are evaluated, different driving systems are investigated, and resulting device architectures are benchmarked. Finally, the research opportunities on MOSLMs for achieving integrated, high‐contrast, and low‐power devices are presented.

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Optical and magneto-optical properties of YIG and FeBO3

Cited by 40 publications

References 45 publications

Faraday Rotation of Dy2O3, CeF3 and Y3Fe5O12 at the Mid-Infrared Wavelengths

Faraday Rotation of Dy2O3, CeF3 and Y3Fe5O12 at the Mid-Infrared Wavelengths

Birefringence-mediated enhancement of the magneto-optical activity in anisotropic magnetic crystals

Advanced Materials and Device Architectures for Magnetooptical Spatial Light Modulators

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