基于纳米盘棒耦合的多频段等离激元诱导透明研究

胡宝晶; 黄铭; 黎鹏; 杨成福

doi:10.7498/aps.69.20200093

摘要

提出了基于银纳米棒和银纳米盘的多频段等离激元诱导透明(PIT)混合模型, 通过时域有限差分法研究了模型的电磁特性. 研究表明: 由于银纳米盘(明模)和银纳米棒(暗模)的明模-暗模-暗模耦合, 模型可以产生双频段的PIT效应. 在双频段的基础之上, 通过两个非对称的双频段PIT模型的叠加, 形成暗模-暗模-明模-暗模-暗模耦合, 可进一步实现四频段的PIT效应. 同时, 只要改变两种PIT模型中银纳米棒的长度以及银纳米棒和银纳米盘之间的距离, 双频段PIT和四频段PIT窗口的谐振频率和透射振幅都会随之变化. 最后研究了四频段PIT模型的传感效应, 发现该模型随背景材料折射率变化的灵敏度(sensitivity)达到了326.2625 THz/RIU, 优值系数(FOM)达到了26.4/RIU, 性能优于其他同类型传感器, 这为该模型在光存储、吸收、滤波和红外频段的传感器设计中的应用提供了理论参考.

关键词:

Abstract

In this paper, the dual-band and four-band plamon-induced transparency(PIT) hybrid model based on silver nanorod and silver nanodisk hybrid model are proposed. The electromagnetic characteristics of the two PIT hybrid models are also estimated respectively. The results show that in the double-band PIT model, the silver nanodisk (bright mode) and the silver nanorod (dark mode) can form the bright-dark-dark mode coupling. Because of the destructive interference produced by nanodisk and nanorod and the emergence of new SPs resonance modes between nanorod and nanorod, the double-band PIT model can produce two transparent windows. When the length of the nanorods and the distance between the nanorods and nanodisk are changed, the resonant frequencies and transmission amplitudes of two transparent windows will be changed accordingly. In the four-band PIT model, the silver nanodisk and the silver nanorods will form the dark-dark-bright-dark-dark mode coupling. The resonant peaks of four transparent windows almost coincide with those of the two asymmetric double-band PIT models. Therefore, the four-band PIT model can be regarded as the superposition of two asymmetric double-band PIT models. The resonant frequencies and transmission amplitudes of four transparent windows also vary with the the length of nanorods and the distance between nanorods and nanodisk.Finally, the sensing performance of the four-band PIT model is investigated. It is found that the model can produce four transparent windows from beginning to end when the refractive index of the background material is changed. As the refractive index is changed from 1.0 to 1.4, the resonant frequencies in four transparent windows are approximately linearly related to the refractive index. At the same time, the maximum sensitivity of the four transparent windows can reach 326.2625 (THz/RIU) and the maximum figure of merit can arrive at 26.4 (1/RIU), which is higher than those of similar similar sensors in other literatures. This work provides the theoretical support for these models’ potential applications in many areas such as optical storage, absorption, filtering and the design of sensors in infrared band.

Keywords:

multiband plasmon-induced transparency /
metamaterials /
Finite Difference Time Domain

作者及机构信息

1.
云南大学信息学院, 昆明　650091

2.
云南农业大学理学院, 昆明　650201

通信作者: 黄铭, huangming@ynu.edu.cn

基金项目: 国家级-国家自然科学基金(61461052)

Authors and contacts

1.
School of Information Science and Engineering, Yunnan University, Kunming 650091, China

2.
College of Science, Yunnan Agricultural University, Kunming 650201, China

Corresponding author: Huang Ming, huangming@ynu.edu.cn

文章全文 : translate this paragraph

参考文献

[1]	Alp A, Ahmet A, Hatice A 2011 Nano Lett. 11 1685 Google Scholar
[2]	Dong Z G, Liu H, Xu M X 2010 Opt. Express 18 18229 Google Scholar
[3]	马平平, 张杰, 刘焕焕 2016 物理学报 65 217801 Google Scholar Ma P P, Zhang J, Liu H H 2016 Acta Phys. Sin. 65 217801 Google Scholar
[4]	Liu D D, Fu W, Shao J 2019 Plasmonics 14 663 Google Scholar
[5]	Hu S, Liu D, Yang H L 2019 Opt. Commun. 450 202 Google Scholar
[6]	Yang S Y, Xia X X, Liu Z 2016 J. Phys. Condens. Matter 28 445002 Google Scholar
[7]	Cheng S J, Xu Z F, Yao D Y 2019 OSA Continuum 2 2137 Google Scholar
[8]	Liu J T, Hu H F, Shao X P 2019 Opt. Lett. 44 3829 Google Scholar
[9]	Zhou J S, Wang W J, Luo C Y 2019 Opt. Express 27 2363 Google Scholar
[10]	Zhao Z Y, Gu Z D, Zhao H 2019 Opt. Mater. Express 9 1608 Google Scholar
[11]	Liu Z Y, QiI L M, Sun D D 2019 Materials 12 841 Google Scholar
[12]	Kim J Y, Soref R, R Walter 2010 Opt. Express 18 17997 Google Scholar
[13]	Artar A, Ahmet A, Altug H 2011 Nano. Letter 11 1685
[14]	Yin X G, Feng T H, Yip S P 2013 Appl. Phys. Lett. 103 021115 Google Scholar
[15]	Khan A D, Amin M 2018 Opt. Mater. 79 480 Google Scholar
[16]	Li H M, Xu Y Y 2019 Opt. Mater. Express 5 2107 Google Scholar
[17]	Tang C, Niu Q S, Wang B X 2018 Plasmonics 14 533 Google Scholar
[18]	Yu W, Meng H, Chen Z 2018 Opt. Commun. 414 29 Google Scholar
[19]	Li W, Zhai X, Shang X 2017 Opt. Mater. Express 7 4269 Google Scholar
[20]	Zhang S, Genov D A, Wang Y 2008 Phys. Rev. Lett. 101 047401 Google Scholar
[21]	He J N, Wang J Q, Ding P 2015 Plasmonics 10 1115 Google Scholar
[22]	Zhou X, Ou Y M, Tang B 2017 Opt. Commun. 384 65 Google Scholar
[23]	Zhao L, Liu H, He Z H 2018 Opt. Express 26 12838 Google Scholar
[24]	Cong L Q, Tan S Y, Yahiaoui R 2015 Appl. Phys. Lett. 106 031107 Google Scholar
[25]	Chen C Y, Un L W, Tai N H 2009 Opt. Express 17 15372 Google Scholar
[26]	Pan W, Yan Y J, Ma Y 2019 Opt. Commun. 431 115 Google Scholar
[27]	Liu G L, He M X, Tian Z 2013 Appl.Opt. 52 5695 Google Scholar
[28]	Wang B X, Zhai X, Wang G Z 2015 J. Appl. Phys. 117 014504 Google Scholar

施引文献

图 1 双频段PIT模型结构图　(a)三维空间结构图; (b)二维平面结构图

Fig. 1. Schematic diagrams of dual-band PIT model: (a) Three-dimensional space schematic; (b) two-dimensional plane schematic.

下载: 全尺寸图片幻灯片

图 2 纳米盘阵列、纳米棒阵列、单频段PIT模型、双频段PIT模型的透射曲线

Fig. 2. Transmission spectra of the sole nanodisk array, the sole nanorod array, the single-band PIT model

下载: 全尺寸图片幻灯片

图 3 双频段PIT模型在(a) dip A, (b) dip B, (c) dip C, (d) peak D, (e)peak E的电场分布

Fig. 3. Distribution of electric field of dual-band PIT model at (a) dip A, (b) dip B, (c) dip C, (d) peak D and (e) peak E.and the dual-band PIT model.

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图 4 改变银纳米盘与银纳米棒、银纳米棒与银纳米棒间隔g时透射率随频率的变化情况

Fig. 4. Variation of transmission with frequency of different g.

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图 5 改变银纳米棒长度L时, 透射率随频率的变化情况

Fig. 5. Variation of transmission with frequency of different L

下载: 全尺寸图片幻灯片

图 6 四频段PIT模型结构图　(a)三维空间结构图; (b)二维平面结构图

Fig. 6. Schematic diagrams of four-band PIT model: (a) Three-dimensional space schematic; (b) two-dimensional plane schematic.

下载: 全尺寸图片幻灯片

图 7 四频段PIT模型的透射曲线

Fig. 7. The transmission of four-band PIT model.

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图 8 两种双频段PIT模型与四频段PIT模型透射率对比

Fig. 8. The comparison of transmission between two dual-band PIT models and four-band PIT model.

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图 9 四频段PIT模型在(a) peak A, (b) peak B, (c) peak C, (d) peak D的电场分布

Fig. 9. Distribution of electric field of four-band PIT model at (a) peak A, (b) peak B, (c) peak C, (d) peak D.

下载: 全尺寸图片幻灯片

图 10 改变上棒长度L₂时, 透射率随频率的变化

Fig. 10. Variation of transmission with frequency of different L₂.

下载: 全尺寸图片幻灯片

图 11 改变下棒长度L₁时, 透射率随频率的变化

Fig. 11. Variation of transmission with frequency of different L₁.

下载: 全尺寸图片幻灯片

图 12 改变盘与棒之间、棒与棒之间的间隔g时透射率随频率的变化情况

Fig. 12. Variation of transmission with frequency of different g.

下载: 全尺寸图片幻灯片

图 13 不同背景材料下的透射窗对比

Fig. 13. The variation of transmission windows with different background materials.

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图 14 peak A和peak B随背景材料折射率的变化规律

Fig. 14. The variation of peak A and peak B with different background materials.

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图 15 peak C和peak D随背景材料折射率的变化规律

Fig. 15. The variation of peak C and peak D with different background materials.

下载: 全尺寸图片幻灯片

表 1 不同参考文献中传感器模型的FOM参数比较

Table 1. Comparison of FOM with reported sensor in different references.

传感器类型	FOM/RIU^–1	参考文献
太赫兹超灵敏超材料传感器	2.30	[24]
双分离环对混合传感器	2.86	[25]
圆形、方形分离环混合传感器	7.80	[26]
金属纳米孔阵列传感器	10.5	[27]
双频段太赫兹超材料传感器	24.6	[28]
四频段银棒、银盘混合传感器	26.4	本文

下载: 导出CSV

[1]	Alp A, Ahmet A, Hatice A 2011 Nano Lett. 11 1685 Google Scholar
[2]	Dong Z G, Liu H, Xu M X 2010 Opt. Express 18 18229 Google Scholar
[3]	马平平, 张杰, 刘焕焕 2016 物理学报 65 217801 Google Scholar Ma P P, Zhang J, Liu H H 2016 Acta Phys. Sin. 65 217801 Google Scholar
[4]	Liu D D, Fu W, Shao J 2019 Plasmonics 14 663 Google Scholar
[5]	Hu S, Liu D, Yang H L 2019 Opt. Commun. 450 202 Google Scholar
[6]	Yang S Y, Xia X X, Liu Z 2016 J. Phys. Condens. Matter 28 445002 Google Scholar
[7]	Cheng S J, Xu Z F, Yao D Y 2019 OSA Continuum 2 2137 Google Scholar
[8]	Liu J T, Hu H F, Shao X P 2019 Opt. Lett. 44 3829 Google Scholar
[9]	Zhou J S, Wang W J, Luo C Y 2019 Opt. Express 27 2363 Google Scholar
[10]	Zhao Z Y, Gu Z D, Zhao H 2019 Opt. Mater. Express 9 1608 Google Scholar
[11]	Liu Z Y, QiI L M, Sun D D 2019 Materials 12 841 Google Scholar
[12]	Kim J Y, Soref R, R Walter 2010 Opt. Express 18 17997 Google Scholar
[13]	Artar A, Ahmet A, Altug H 2011 Nano. Letter 11 1685
[14]	Yin X G, Feng T H, Yip S P 2013 Appl. Phys. Lett. 103 021115 Google Scholar
[15]	Khan A D, Amin M 2018 Opt. Mater. 79 480 Google Scholar
[16]	Li H M, Xu Y Y 2019 Opt. Mater. Express 5 2107 Google Scholar
[17]	Tang C, Niu Q S, Wang B X 2018 Plasmonics 14 533 Google Scholar
[18]	Yu W, Meng H, Chen Z 2018 Opt. Commun. 414 29 Google Scholar
[19]	Li W, Zhai X, Shang X 2017 Opt. Mater. Express 7 4269 Google Scholar
[20]	Zhang S, Genov D A, Wang Y 2008 Phys. Rev. Lett. 101 047401 Google Scholar
[21]	He J N, Wang J Q, Ding P 2015 Plasmonics 10 1115 Google Scholar
[22]	Zhou X, Ou Y M, Tang B 2017 Opt. Commun. 384 65 Google Scholar
[23]	Zhao L, Liu H, He Z H 2018 Opt. Express 26 12838 Google Scholar
[24]	Cong L Q, Tan S Y, Yahiaoui R 2015 Appl. Phys. Lett. 106 031107 Google Scholar
[25]	Chen C Y, Un L W, Tai N H 2009 Opt. Express 17 15372 Google Scholar
[26]	Pan W, Yan Y J, Ma Y 2019 Opt. Commun. 431 115 Google Scholar
[27]	Liu G L, He M X, Tian Z 2013 Appl.Opt. 52 5695 Google Scholar
[28]	Wang B X, Zhai X, Wang G Z 2015 J. Appl. Phys. 117 014504 Google Scholar

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