十字结构银纳米线的表面等离极化激元分束特性

张永元; 罗李娜; 张中月

doi:10.7498/aps.64.097303

摘要

金属纳米线波导可以将光局域在亚波长尺度内传播, 在纳米光子集成回路方面有着重要的作用. 本文应用有限元方法, 研究了十字结构银纳米线的表面等离极化激元分束特性. 结果表明, 不同模式的表面等离极化激元在十字结构三个分支的输出依赖于端面的几何结构参数. 此外, 研究还发现由于不同模式表面等离极化激元叠加, 在十字结构的分支上出现了周期性电场分布.

关键词:

Since metallic nanowires can confine light in nanoscale beyond the diffraction limit, metallic nanowires play an important role in nanophotonic integrated circuits. In this paper, a silver nanowire waveguide with a cross is proposed and its surface plasmon polaritons (SPPs) splitting properties of the cross at λ = 532 nm are studied by the finite element method. The nanowire has a square shape with its side length of a. Results show that the outputs for different input modes depend on the geometric parameters of the nanowires. For SPPs with TM0 mode, there are similar intensities in different waveguide directions with smaller side length. With the increase of a, the intensity in the original waveguide direction increases monotonically, and those in the perpendicular direction will decrease monotonically. For SPPs with HE1 mode and HE-1 mode, most of the energy propagate along the original waveguide direction for smaller a. With the increase of a, the intensity in the original waveguide direction decreases dramatically. For SPPs with HE1 mode, the cross blocks most of the energy in three directions for larger a. In addition to the splitting effect of it, the cross also performs a function of mode conversion. For the input SPPs with TM0 mode, the output of SPPs along the perpendicular waveguide direction can be converted to the HE-1 mode. For the input SPPs with HE1 mode, the output of SPPs along the perpendicular waveguide direction can be converted to the TM0 mode. Due to the superposition of electric fields of different SPPs modes in the perpendicular waveguide direction occur the steady-state and periodic electric field distributions.

Keywords:

作者及机构信息

1.
陕西师范大学物理学与信息技术学院, 西安 710062;

2.
西安科技大学理学院, 西安 710054

基金项目: 国家自然科学基金(批准号: 11004160)、中央高校基本科研业务费专项基金(编号: GK201303007)和西安科技大学培育基金(编号: 2010045)资助的课题.

Authors and contacts

1.
School of Physics and Information Technology, Shaanxi Normal University, Xi’an 710062, China;

2.
School of Science, Xi’an University of Science and Technology, Xi’an 710054, China

Funds: Project supported by the National Natural Science Foundation of China (Grant No. 11004160), the Fundamental Research Funds for the Central Universities of Ministry of Education of China (Grant No. GK201303007), and the Fostering Fund of Xian University of Science and Technology of China (Grant No. 2010045).

参考文献

[1]	Raether H 1988 Surface Plasmons (Berlin Heidelberg: Springer-Verlag)
[2]	Li X L, Zhang Z D, Wang H, Y, Xiong Z H, Zhang Z Y 2011 Acta Phys. Sin. 60 047807 (in Chinese) [李雪莲, 张志东, 王红艳, 熊祖洪, 张中月 2011 物理学报 60 047807]
[3]	Lamprecht B, Krenn J R, Schider G, Ditlbacher H, Salerno M, Felidj N, Leitner A, Aussenegg F R, Weeber J C 2001 Appl. Phys. Lett. 79 51
[4]	Zia R, Selker M D, Brongersma M L 2005 Phys. Rev. B 71 165431
[5]	Degiron A, Cho S Y, Harrison C, Jokerst N M, Dellagiacoma C, Martin Olivier J F, Smith D R 2008 Phys. Rev. A 77 021804
[6]	Breukelaar I, Charbonneau R, Berini P 2006 Appl. Phys. Lett. 88 05119
[7]	Maier S A, Kik P G, Atwater H A 2003 Appl. Phys. Lett. 81 1714
[8]	Bozhevolnyi S I, Volkov V S, Devaux E, Ebbesen T W 2005 Phys. Rev. Lett. 95 046802
[9]	Pile D F P, Gramotnev D K 2004 Opt. Lett. 29 1069
[10]	Maier S A, Friedman M D, Barclay P E, Painter O. 2005 Appl. Phys. Lett. 86 171486
[11]	Fu Y L, Hu X Y, Lu C C, Yue S, Yang H, Gong Q H 2012 Nano Lett. 12 5784
[12]	Economou C, Peeiffer C A, Ngai K L 1974 Phys. Rev. B 71 3038
[13]	Prade B, Vinet J Y 1994 Journal of Lightwave Technology 12 6
[14]	Schroter U, Dereux A 2001 Phys. Rev. B 64 125420
[15]	Novotny L, Hafner C 1994 Phys. Rev. B 50 4094
[16]	Yang P F, Gu Y, Gong Q H 2008 Chin. Phys. B 17 3880
[17]	Guo Y N, Xue W R, Zhang W M 2009 Acta Phys. Sin. 58 4168 (in Chinese) [郭亚楠, 薛文瑞, 张文梅 2009 物理学报 58 4168]
[18]	Oulton R F, Sorger V J, Genov D A, Pile D F, Zhang X 2008 Nature Photonics 2 496
[19]	Li X Y, Guo X, Wang D L, Tong L M 2014 Optics Communications. 323 119
[20]	Krenn J R, Lamprecht B, Ditlbacher H, Schider G, Salerno M, Leitner A, Aussenegg F R 2002 Europhys Lett. 60 663
[21]	Zou C L, Sun F W, Xiao Y F, Dong C H, Chen X D, J M Cui, Gong Q, Han Z F, Guo G C 2010 Appl. Phys. Lett. 97 183102
[22]	Li Q, Qiu M 2013 Opt. Express 21 8587
[23]	Sun S L, Chen HT, Zheng J W, Guo G Y 2013 Opt. Express 21 14591
[24]	Wang W H, Yang Q, Fan F G, Xu H X, Wang Z L 2011 Nano Lett. 11 1603
[25]	Li Z P, Bao K, Fang Y R, Huang Y Z, Nordlander P, Xu H X 2010 Nano Lett. 10 1831
[26]	Zhang S P, Wei H, Bao K, Ha 発 anson U, Halas N J, Nordlander P, Xu H X 2011 Phys. Rev. Lett. 107 096801
[27]	Johnson P B, Christy R W 1972 Phys. Rev. B 6 4370

施引文献

[1]	Raether H 1988 Surface Plasmons (Berlin Heidelberg: Springer-Verlag)
[2]	Li X L, Zhang Z D, Wang H, Y, Xiong Z H, Zhang Z Y 2011 Acta Phys. Sin. 60 047807 (in Chinese) [李雪莲, 张志东, 王红艳, 熊祖洪, 张中月 2011 物理学报 60 047807]
[3]	Lamprecht B, Krenn J R, Schider G, Ditlbacher H, Salerno M, Felidj N, Leitner A, Aussenegg F R, Weeber J C 2001 Appl. Phys. Lett. 79 51
[4]	Zia R, Selker M D, Brongersma M L 2005 Phys. Rev. B 71 165431
[5]	Degiron A, Cho S Y, Harrison C, Jokerst N M, Dellagiacoma C, Martin Olivier J F, Smith D R 2008 Phys. Rev. A 77 021804
[6]	Breukelaar I, Charbonneau R, Berini P 2006 Appl. Phys. Lett. 88 05119
[7]	Maier S A, Kik P G, Atwater H A 2003 Appl. Phys. Lett. 81 1714
[8]	Bozhevolnyi S I, Volkov V S, Devaux E, Ebbesen T W 2005 Phys. Rev. Lett. 95 046802
[9]	Pile D F P, Gramotnev D K 2004 Opt. Lett. 29 1069
[10]	Maier S A, Friedman M D, Barclay P E, Painter O. 2005 Appl. Phys. Lett. 86 171486
[11]	Fu Y L, Hu X Y, Lu C C, Yue S, Yang H, Gong Q H 2012 Nano Lett. 12 5784
[12]	Economou C, Peeiffer C A, Ngai K L 1974 Phys. Rev. B 71 3038
[13]	Prade B, Vinet J Y 1994 Journal of Lightwave Technology 12 6
[14]	Schroter U, Dereux A 2001 Phys. Rev. B 64 125420
[15]	Novotny L, Hafner C 1994 Phys. Rev. B 50 4094
[16]	Yang P F, Gu Y, Gong Q H 2008 Chin. Phys. B 17 3880
[17]	Guo Y N, Xue W R, Zhang W M 2009 Acta Phys. Sin. 58 4168 (in Chinese) [郭亚楠, 薛文瑞, 张文梅 2009 物理学报 58 4168]
[18]	Oulton R F, Sorger V J, Genov D A, Pile D F, Zhang X 2008 Nature Photonics 2 496
[19]	Li X Y, Guo X, Wang D L, Tong L M 2014 Optics Communications. 323 119
[20]	Krenn J R, Lamprecht B, Ditlbacher H, Schider G, Salerno M, Leitner A, Aussenegg F R 2002 Europhys Lett. 60 663
[21]	Zou C L, Sun F W, Xiao Y F, Dong C H, Chen X D, J M Cui, Gong Q, Han Z F, Guo G C 2010 Appl. Phys. Lett. 97 183102
[22]	Li Q, Qiu M 2013 Opt. Express 21 8587
[23]	Sun S L, Chen HT, Zheng J W, Guo G Y 2013 Opt. Express 21 14591
[24]	Wang W H, Yang Q, Fan F G, Xu H X, Wang Z L 2011 Nano Lett. 11 1603
[25]	Li Z P, Bao K, Fang Y R, Huang Y Z, Nordlander P, Xu H X 2010 Nano Lett. 10 1831
[26]	Zhang S P, Wei H, Bao K, Ha 発 anson U, Halas N J, Nordlander P, Xu H X 2011 Phys. Rev. Lett. 107 096801
[27]	Johnson P B, Christy R W 1972 Phys. Rev. B 6 4370

计量

文章访问数: 5057
PDF下载量: 314
被引次数: 0

姓名
邮箱
手机号码
标题
留言内容
验证码

搜索

留言板