Acoustic Birefringence at Electromagnetic Excitation of Sound in Iron Borate Crystals

Khizhnyi, V. I.; Korolyuk, A. P.; Khizhnaya, T. M.

doi:10.1615/telecomradeng.v76.i4.60

Cited by 2 publications

(2 citation statements)

References 3 publications

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“…Moreover, the sharp Δ peaks of different signs are very close to each other in the angular spectra, so that the derivative ∂Δ/∂α enormously grows near these angles (see, for example, α ∼ 15° in Figure ). As the FeBO 3 crystal is known to be very sensitive to mechanical stresses, such dependence could be used for various magneto-acousto-optical devices where the acoustic pulse controls the birefringence Δ ε , and the magnetic field is responsible for the light modulation.…”

Section: Resultsmentioning

confidence: 99%

Birefringence-Mediated Enhancement of the Magneto-Optical Activity in Anisotropic Magnetic Crystals

et al. 2022

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Optical anisotropy is usually treated as an unfavorable condition for the magneto-optical measurements since it is known to diminish the Faraday rotation concerning 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 incident light polarization and angle of incidence are set 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 resulting in nearly 100% magneto-optical light modulation magnitude. The approach applies to other types of birefringent crystals with the magneto-optical response that makes it crucial for various practical applications, including magneto-optical microscopy, pump-probe studies, and others.

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Section: Resultsmentioning

confidence: 99%

Birefringence-Mediated Enhancement of the Magneto-Optical Activity in Anisotropic Magnetic Crystals

et al. 2022

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“…3). As FeBO 3 crystal is known to be very sensitive to the mechanical stresses [29], such dependence could be used for various magneto-acoustooptical devices where the acoustic pulse controls the bire- fringence ∆ε, and the magnetic field is responsible for the light modulation.…”

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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Acoustic Birefringence at Electromagnetic Excitation of Sound in Iron Borate Crystals

Cited by 2 publications

References 3 publications

Birefringence-Mediated Enhancement of the Magneto-Optical Activity in Anisotropic Magnetic Crystals

Birefringence-Mediated Enhancement of the Magneto-Optical Activity in Anisotropic Magnetic Crystals

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

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