栅栏
极化(电化学)
光学
锥面
波长
平面的
电场
辐射
电磁辐射
激发态
导模共振
材料科学
物理
光电子学
衍射光栅
化学
计算机图形学(图像)
物理化学
量子力学
计算机科学
核物理学
复合材料
标识
DOI:10.1016/j.icheatmasstransfer.2024.107254
摘要
The enhanced nonreciprocal radiation in grating structure for light under conical incidence is investigated. The basic structure is composed of a one-dimensional grating on a continuous Weyl semimetal planar and a thick metallic mirror. The results show that near-perfect nonreciprocal radiation can be observed for transverse electric wave, which cannot be achieved for light in traditional incidence. Such effect results from the guided mode resonance (GMR) excited inside the grating, demonstrated by studying the electromagnetic field amplitude distribution. Moreover, the strong nonreciprocity is also stable for the geometric parameters in a wide varying range, lowering the cost of manufacture. Most of important, the proposed scheme could be employed to realize enhanced nonreciprocity for both TM polarization and TE polarization with different resonant wavelengths along with the same resonant wavelength. The concepts proposed here should pave the way to the development of polarization-dependent and polarization-independent as well as dual-polarization nonreciprocal emitters.
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