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首页> 外文期刊>Physical review. B, Condensed Matter And Materials Physics >Dependence of Faraday rotation and magneto-optical figure of merit on dielectric tensor elements in materials with uniaxial symmetry
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Dependence of Faraday rotation and magneto-optical figure of merit on dielectric tensor elements in materials with uniaxial symmetry

机译:法拉第旋转和磁光性能因数对单轴对称材料中介电张量的依赖性

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摘要

We derive the functional dependence of the specific Faraday rotation Θ, optical absorption α, and magneto-optical figure of merit F=|Θ|/α on the dielectric tensor elements of a uniaxial, magneto-optically active material in a wavelength regime of relative transparency. In addition, we calculate F as a function of ω < 2.2 eV for the diamagnetic transition of the octahedrally coordinated Fe~(3+) in bismuth doped yttrium iron garnet (ω_0=3.15 eV) and show that F achieves a local maximum value in this frequency regime at ω= 1.25 eV. We also discuss the implications of this result in rare-earth iron garnets for bulk magneto-optical isolators and in orthoferrites for thin film devices. Finally, we discuss the importance of controlling linear birefringence in thin film isolators and its impact on the usefulness of F.
机译:我们推导了法拉第比旋转Θ,光吸收α和磁光品质因数F = |Θ| /α对单轴磁光活性材料在相对波长范围内的介电张量元素的函数依赖性透明度。此外,对于铋掺杂钇铁石榴石(ω_0= 3.15 eV)中八面体配位的Fe〜(3+)的反磁跃迁,我们将F计算为ω<2.2 eV的函数,并证明F在以下条件下达到局部最大值ω= 1.25 eV时的这种频率范围。我们还讨论了稀土铁石榴石用于批量磁光隔离器以及正铁氧体用于薄膜器件中此结果的含义。最后,我们讨论了控制薄膜隔离器中线性双折射的重要性及其对F有用性的影响。

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