纳米线
材料科学
光电子学
光学
氮化铌
极化(电化学)
消光比
探测器
超短脉冲
表面等离子共振
表面等离子体子
等离子体子
波长
氮化物
激光器
纳米技术
纳米颗粒
物理
化学
物理化学
图层(电子)
作者
Min Gu,Shangkun Zhang,Xianghao Wang,Wencong Wang,Dongmei Liu,WU Xian-qiu
出处
期刊:Optics Express
[Optica Publishing Group]
日期:2024-04-01
卷期号:32 (9): 15537-15537
摘要
This study proposed what we believe to be a novel method for fabricating superconducting nanowire single-photon detectors (SNSPDs) with high efficiency, polarization insensitivity, and ultrafast response. To achieve these properties in niobium nitride (NbN) SNSPDs, the periodic four-split rings (PFSR) were positioned above the nanowires. This design uses the localized surface plasmon resonance to enhance the electric field around nanowires. For an incident light with a wavelength of 1550 nm, the PFSR-SNSPD structure achieved a polarization extinction ratio of 1.0064 and absorptions of 88.94% and 88.37% under TE and TM polarizations, respectively. The nanowire length was reduced by 85% using a meandering nanowire arrangement with a fill factor of 0.074.
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