Terahertz response of gadolinium gallium garnet (GGG) and gadolinium scandium gallium garnet (SGGG)
Terahertz response of gadolinium gallium garnet (GGG) and gadolinium scandium gallium garnet (SGGG)
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DOI：
10.1063/1.5131366
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发表时间：
2020-01
影响因子：
3.2
通讯作者：
Mohsen Sabbaghi;G. Hanson;M. Weinert;F. Shi;C. Cen
中科院分区：
文献类型：
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作者：
Mohsen Sabbaghi;G. Hanson;M. Weinert;F. Shi;C. Cen
报道了在300 GHz~1 THz频率范围内，Gd镓石榴石(GGG)和Gd Sc镓石榴石(SGGG)的磁光响应，并确定了材料响应张量。在此频率窗口内，材料表现出非色散和低损耗的光学响应。在低温下，在(S)GGG样品中发现了显著的太赫兹法拉第旋转角。这种强烈的旋电响应可能与Gd3+离子的高自旋顺磁态有关。建立了材料响应张量模型，给出了材料的Verdet常数和磁光常数，报道了GGG和SGGG在300 GHz~1 THz频率范围内的磁光响应，并确定了材料响应张量。在此频率窗口内，材料表现出非色散和低损耗的光学响应。在低温下，在(S)GGG样品中发现了显著的太赫兹法拉第旋转角。这种强烈的旋电响应可能与Gd3+离子的高自旋顺磁态有关。确定了材料响应张量的模型，以及Verdet和磁光常数。
We report the magneto-optical response of gadolinium gallium garnet (GGG) and gadolinium scandium gallium garnet (SGGG) at frequencies ranging from 300 GHz to 1 THz and determine the material response tensor. Within this frequency window, the materials exhibit nondispersive and low-loss optical responses. At low temperatures, significant terahertz Faraday rotations are found in the (S)GGG samples. Such a strong gyroelectric response is likely associated with the high-spin paramagnetic state of the Gd 3 + ions. A model of the material response tensor is determined, together with the Verdet and magneto-optic constants.We report the magneto-optical response of gadolinium gallium garnet (GGG) and gadolinium scandium gallium garnet (SGGG) at frequencies ranging from 300 GHz to 1 THz and determine the material response tensor. Within this frequency window, the materials exhibit nondispersive and low-loss optical responses. At low temperatures, significant terahertz Faraday rotations are found in the (S)GGG samples. Such a strong gyroelectric response is likely associated with the high-spin paramagnetic state of the Gd 3 + ions. A model of the material response tensor is determined, together with the Verdet and magneto-optic constants.