Anisotropic transmission properties of magnetic fluids in the midinfrared region
Anisotropic transmission properties of magnetic fluids in the midinfrared region
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DOI：
10.1364/josab.28.001645
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发表时间：
2011-07
影响因子：
1.9
通讯作者：
M. Saito;Yoku Hirose
中科院分区：
文献类型：
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作者：
M. Saito;Yoku Hirose
利用煤油和磁铁矿纳米颗粒悬浮液，在4-10μm波长范围内测量了磁性液体的红外传输特性。磁性液体的光学密度向短波方向逐渐增大，这表明散射是光学损耗的主要来源。当在垂直于光路的方向上施加900G的磁场时，光密度的增加或减小取决于探针束的偏振方向是平行于还是垂直于磁场。相比之下，轴向磁场降低了两种偏振的光密度。
Infrared transmission characteristics of magnetic fluids were measured in the 4–10 μm wavelength range by using suspensions of kerosene and magnetite nanoparticles. The optical density of the magnetic fluid increased gradually toward short wavelengths, which indicated that scattering was a principal origin of the optical loss. When a magnetic field of 900 G was applied in the direction perpendicular to the optical path, the optical density increased or decreased depending on whether the polarization direction of the probe beam was parallel or perpendicular to the magnetic field. By contrast, an axial magnetic field reduced the optical density for both polarizations.