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A grating-based magneto-plasmonic sensor considering geometrical deviations

delete2025-02-20
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A
Abbasi, Sajad
M
Mohammad Reza Salehi *
DOI:10.1088/1402-4896/adb528delete
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摘要

摘要

En 中文
在本工作中,设计了一种基于光栅的磁等离子体传感器。随后,研究了晶格表现出几何偏差的模态,并进行了模拟。在该传感器中,分别采用金(Au)、铋取代铁石榴石(BIG)和SiO2作为晶格、磁性层和衬底的设计材料。使用波长为630 nm、辐射角度为1度至35度的光场来激发该结构。在开发此类传感器时假设为理想光栅。由于结构制造过程中可能发生几何偏差,其响应会伴随微小或显著的变化。如果响应偏差过大,则构建的传感器效率低下。为判断该传感器是否高效,研究了结构可能发生偏差的条件。这些模态包括宽度与厚度、周期、斜率或表面凹陷以及光栅边缘曲率的变化,以及沟槽形状的变化。周期变化时出现的模态最为一致,而光栅宽度变化时响应最差。最大品质因数(FoM)和灵敏度分别为8571 RIU⁻¹和85度/RIU。
Keyword:
magneto-plasmonic
refractometric sensor
transverse magneto-optical Kerr effect
geometrical deviation
magneto-optical sensor

期刊

Physica Scripta 封面图
Physica Scripta
IF:
2.6
论文数:
4.3K
被引数:
2.5W

机构

S
shiraz univ technol
学者数:
70
论文数: 39
被引数: 10
引用论文

引用论文

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