内嵌银纳米棒圆形银缝隙结构中的法诺共振现象

罗松; 付统; 张中月

doi:10.7498/aps.62.147303

摘要

应用时域有限差分算法系统地研究了内嵌银纳米棒圆形银缝隙结构的透射特性. 由于倾斜银纳米棒破坏了圆形腔原有的对称稳态磁场分布, 该系统中产生了法诺共振现象. 此外, 透射光谱强烈地依赖于纳米棒的倾斜角度和纳米棒的形貌参数. 这些结果有助于设计复合结构滤波器, 满足特定的滤波需要.

关键词:

The transmittance property and steady-state magnetic field distribution of the sliver circular gap embedded with a sliver nanorod are investigated using the finite-difference time-domain method. Since the titled nanorod breaks the symmetric steady-state magnetic field distribution, Fano resonance occurs in the composite system. In addition, the transmittance spectrum depends strongly on the tilting angle and topologic shape of the nanorod. These results would be useful for designing filter for specific usage.

Keywords:

作者及机构信息

1.
西南大学物理科学与技术学院, 重庆 400715;

2.
陕西师范大学物理学与信息技术学院, 西安 710062

基金项目: 国家自然科学基金(批准号: 11004160)和国家级大学生创新创业训练计划(批准号: 201210635131)资助的课题.

Authors and contacts

1.
School of Physical Science and Technology, Southwest University, Chongqing 400715, China;

2.
School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China

Funds: Project supported by the National Natural Science Foundation of China (Grant No. 11004160) and the National Innovation and Entrepreneurship Foundation for College Student of China (Grant No. 201210635131).

参考文献

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施引文献

[1]	Fano U 1961 Phys. Rev. 124 1866
[2]	Fan J A, Wu C, Bao K, Bao J, Bardhan R, Halas N J, Manoharan V N, Nordlander P, Shvets G, Capasso F 2010 Science 328 1135
[3]	Lassiter J B, Sobhani H, Fan J A, Kundu J, Capasso F, Nordlander P, Halas N J 2010 Nano Lett.10 3184
[4]	Hao F, Sonnefraud Y, Dorpe P V, Maier S A, Halas N J, Nordlander P 2008 Nano Lett. 8 3983
[5]	Sonnefraud Y, Verellen N, Sobhani H, Vandenbosch G A E, Moshchalkov V V, Dorpe P V, Nordlander P, Maier S A 2010 ACS Nano 4 1664
[6]	Zhang S, Genov D A, Wang Y, Liu M, Zhang X 2008 Phys. Rev. Lett. 101 047401
[7]	Zhang S P, Bao K, Halas N J, Xu H X, Nordlander P 2011 Nano Lett. 11 1657
[8]	Verellen N, Sonnefraud Y, Sobhani H, Hao F, Moshchalkov V V, Dorpe P V, Nordlander P, Maier S A 2009 Nano Lett. 9 1663
[9]	Fang Z Y, Cai J Y, Yan Z B, Nordlander P, Halas N J, Zhu X 2011 Nano Lett. 11 4475
[10]	Raether H 1988 Surface Plasmons on Smooth and Rough Surfaces and Gratings (Berlin: Springer Verlag)
[11]	Song W T, Lin F, Fang Z Y, Zhu X 2010 Acta Phys. Sin. 59 6921 (in Chinese) [宋文涛, 林峰, 方哲宇, 朱星 2010 物理学报 59 6921]
[12]	Sun M, Liu R J, Li Z Y, Cheng B Y, Zhang D Z, Yang H F, Jin A Z 2006 Chin. Phys. 15 1591
[13]	Falk A L, Koppens F H L, Yu C L, Kang K, Snapp N D, Akimov A V, Jo M H, Lukin M D, Park H 2009 Nat. Phys. 5 475
[14]	Barnes W L, Dereux A, Ebbesen T W 2003 Nature 124 824
[15]	Bozhevolnyi S I, Volkov V S, Devaux E, Laluet J Y, Ebbesen T W 2006 Nature 440 508
[16]	Chen J J, Li Z, Zhang J S, Gong Q H 2008 Acta Phys. Sin. 57 5893 (in Chinese) [陈建军, 李智, 张家森, 龚旗煌 2008 物理学报 57 5893]
[17]	Wang L, Cai W, Tan X H, Xiang Y X, Zhang X Z, Xu J J 2011 Acta Phys. Sin. 60 067305 (in Chinese) [王垒, 蔡卫, 谭信辉, 向吟啸, 张心正, 许京军 2011 物理学报 60 067305]
[18]	Zhang Z D, Zhao Y N, Lu D, Xiong Z H, Zhang Z Y 2012 Acta Phys. Sin. 61 187301 (in Chinese) [张志东, 赵亚男, 卢东, 熊祖洪, 张中月 2012 物理学报 61 187301]
[19]	Gramotnev D K, Bozhevolnyi S I 2010 Nat. Photon. 4 83
[20]	Chen Y Y, Zou R H, Song G, Zhang K, Yu L, Zhao Y F, Xiao J H 2012 Acta Phys. Sin. 61 247301 (in Chinese) [陈园园, 邹仁华, 宋钢, 张恺, 于丽, 赵玉芳, 肖井华 2012 物理学报 61 247301]
[21]	Kekatpur R D, Hryciw A C, Barnard E S, Brongersma M L 2009 Opt. Express 17 24112
[22]	Gai H F, Wang J, Tian Q 2007 Appl. Opt. 46 2229

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