Enhanced circular dichroism of crossed nanorods with nanowire

被引：7
作者：
Wang, Mingyan [1 ]
Wang, Fei [1 ]
Qu, Yu [1 ]
Wang, Tiankun [1 ]
Chen, Yuyan [1 ]
Bai, Yu [1 ]
Zhang, Zhongyue [1 ]
机构：
[1] Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710062, Shaanxi, Peoples R China
来源：
APPLIED OPTICS | 2018年 / 57卷 / 23期
基金：
中国国家自然科学基金;
关键词：
OPTICAL-ACTIVITY; PHOTONIC METAMATERIAL; CHIROPTICAL RESPONSE; PLASMONIC OLIGOMERS; GOLD NANORODS; NANOSTRUCTURES; CHIRALITY; ARRAY;
D O I：
10.1364/AO.57.006721
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Circular dichroism (CD) is a signal that characterizes the optical properties of chiral structures. Structures with intense CD signals have valuable applications in molecular chemistry, pharmaceuticals, and biosensing. This work proposes the use of a nanowire to increase the CD signal of crossed nanorods. The separation of resonant wavelengths of transmission under left-handed and right-handed circular polarization incidence (LCP and RCP) increases because the electric interaction between the upper nanorod and nanowire under LCP incidence is different from that under RCP incidence. The increased separation of resonant wavelengths, in turn, enhances the CD signals. In addition, two new CD modes appear, and these modes can be tuned by changing the structural parameters of the proposed structure. The present results will guide the design of plasmonic chiral nanostructures for enhancing the CD signal. (C) 2018 Optical Society of America
引用
收藏
页码：6721 / 6724
页数：4
相关论文
共 37 条
  • [1] Circular dichroism in planar nonchiral metamaterial made of elliptical nanoholes array
    Cao, T.
    Cryan, M. J.
    [J]. JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS, 2012, 26 (10) : 1275 - 1282
  • [2] Strongly tunable circular dichroism in gammadion chiral phase-change metamaterials
    Cao, Tun
    Zhang, Lei
    Simpson, Robert E.
    Wei, Chenwei
    Cryan, Martin J.
    [J]. OPTICS EXPRESS, 2013, 21 (23): : 27841 - 27851
  • [3] Asymmetric transmission of obliquely intersecting nanoslit arrays in a gold film
    Chen, Yuyan
    Wang, Yongkai
    Wang, Tiankun
    Zhang, Yongyuan
    Wang, Li
    Zhang, Zhongyue
    [J]. APPLIED OPTICS, 2017, 56 (20) : 5781 - 5785
  • [4] Giant Chiral Optical Response from a Twisted-Arc Metamaterial
    Cui, Yonghao
    Kang, Lei
    Lan, Shoufeng
    Rodrigues, Sean
    Cai, Wenshan
    [J]. NANO LETTERS, 2014, 14 (02) : 1021 - 1025
  • [5] Twisted split-ring-resonator photonic metamaterial with huge optical activity
    Decker, M.
    Zhao, R.
    Soukoulis, C. M.
    Linden, S.
    Wegener, M.
    [J]. OPTICS LETTERS, 2010, 35 (10) : 1593 - 1595
  • [6] Bi-layer cross chiral structure with strong optical activity and negative refractive index
    Dong, Jianfeng
    Zhou, Jiangfeng
    Koschny, Thomas
    Soukoulis, Costas
    [J]. OPTICS EXPRESS, 2009, 17 (16): : 14172 - 14179
  • [7] Tunable Chiroptical Response of Chiral Plasmonic Nanostructures Fabricated with Chiral Templates through Oblique Angle Deposition
    Fu, Tong
    Qu, Yu
    Wang, Tiankun
    Wang, Gang
    Wang, Yongkai
    Li, Hui
    Li, Juan
    Wang, Li
    Zhang, Zhongyue
    [J]. JOURNAL OF PHYSICAL CHEMISTRY C, 2017, 121 (02) : 1299 - 1304
  • [8] Gold helix photonic metamaterials: A numerical parameter study
    Gansel, Justyna K.
    Wegener, Martin
    Burger, Sven
    Linden, Stefan
    [J]. OPTICS EXPRESS, 2010, 18 (02): : 1059 - 1069
  • [9] Gold Helix Photonic Metamaterial as Broadband Circular Polarizer
    Gansel, Justyna K.
    Thiel, Michael
    Rill, Michael S.
    Decker, Manuel
    Bade, Klaus
    Saile, Volker
    von Freymann, Georg
    Linden, Stefan
    Wegener, Martin
    [J]. SCIENCE, 2009, 325 (5947) : 1513 - 1515
  • [10] Extreme optical activity and circular dichroism of chiral metal hole arrays
    Gorkunov, M. V.
    Ezhov, A. A.
    Artemov, V. V.
    Rogov, O. Y.
    Yudin, S. G.
    [J]. APPLIED PHYSICS LETTERS, 2014, 104 (22)
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