Nonreciprocal optical properties of thermal radiation with SiC grating magneto-optical materials.
Nonreciprocal optical properties of thermal radiation with SiC grating magneto-optical materials.
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DOI：
10.1364/oe.25.019609
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发表时间：
2017-08
期刊：
影响因子：
3.8
通讯作者：
Han Wang;Hao Wu;Z. Shen
中科院分区：
文献类型：
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作者：
Han Wang;Hao Wu;Z. Shen
研究了SiC基片光栅在红外波段的非互易光学现象，提出了描述磁光材料在磁场作用下，在不同强度和波长下的非互易光学特性的Lorentz-Drude介电常数张量方程。此外，提出了合理设计的几何因子，并提出了良好的非互易吸收性能的SiC在热辐射波段。详细研究了吸收率随不同结构参数（如不同层的厚度、填充率）的变化关系。此外，还提出了电场强度，以了解光耦合，传播。数值结果表明，非互易吸收性能对入射角和磁场强度都很敏感。相关研究对光伏和光学仪器的热辐射设计具有一定的参考价值。
We demonstrate the nonreciprocal optical phenomenon of SiC gratings on substrate in infrared band, in which the Lorentz-Drude equations of dielectric constant tensor are proposed to describe the nonreciprocal optical properties as magnetic field applied on the magneto-optical materials, under variable intensity and wavelength. Moreover, the properly designed geometrical factors are proposed, and the good nonreciprocal absorption properties of SiC in thermal radiation wavelength band are presented. The dependence of the absorptivity as a function of different structure parameters, such as thickness of different layers, filling ratios, is studied in details. Furthermore, the electric field intensity is also presented for understanding light coupling, propagation. Numerical evidence shows that the nonreciprocal absorption performance is sensitive to the incidence angle, as well as the magnetic field strength. The relative study is useful to the thermal radiative design in photovoltaic and optical instrument.