一个1D光子晶体结构中的Goos-Hänchen转移含有维尔半金属缺陷层
Applied optics
|August 12, 2025
概括
这项研究探讨了一维光子晶体 (1DPC) 中的Goos-Hänchen (GH) 转移,该晶体具有韦尔半金属 (WSM) 缺陷. 研究人员发现,费米能量和韦尔节点数量可以调整光学设备的GH转移.
科学领域:
- 光学和光子学 在光学和光子学.
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
背景情况:
- 戈斯-汉肯 (GH) 移位是光学中的一个现象,涉及反射光束的横向移位.
- 光子晶体由于其周期性结构,具有独特的光学特性.
- 韦尔半金属 (WSMs) 具有异国情调的电子和拓特性,在光学中具有潜在的应用.
研究的目的:
- 为了研究Goos-Hänchen (GH) 转移在一个一维光子晶体 (1DPC) 中,将一个单一的韦尔半金属 (WSM) 层作为缺陷.
- 分析WSM层的特性如何影响GH转移.
- 探索用于光学设备应用的这种结构中调整GH转移的潜力.
主要方法:
- 使用一个一维的光子晶体 (1DPC) 结构,配置为 (AB) NWSM(BA) M,作为一个对称的Fabry-Perot (s-FP) 干扰仪.
- 使用转移矩阵方法计算TM偏振波的反射系数.
- 从反射波的相变量中提取GH转移,并分析WSM的电容性.
主要成果:
- 该研究通过分析WSM的电容性的真实部分,系统地检查了反射频谱,相应反应和GH转移.
- 发现费米能量和韦尔节点数量 (g) 都显著影响了GH转移的幅度.
- 费米能量的增加增加了GH转移大小,而韦尔节点数量的增加减少了它.
结论:
- 费米能量和韦尔节点的数量提供了可调节的参数,用于控制拟议的1DPC-WSM结构中的GH转移.
- 通过调整这些WSM属性,可以精确控制最大GH位移的撞击角度.
- 这些发现为开发利用GH效应的新型可调光学设备铺平了道路.
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