title: Broadband plasmon induced transparency in terahertz metamaterials.
abstract: Plasmon induced transparency (PIT) could be realized in metamaterials via interference between different resonance modes. Within the sharp transparency window, the high dispersion of the medium may lead to remarkable slow light phenomena and an enhanced nonlinear effect. However, the transparency mode is normally localized in a narrow frequency band, which thus restricts many of its applications. Here we present the simulation, implementation, and measurement of a broadband PIT metamaterial functioning in the terahertz regime. By integrating four U-shape resonators around a central bar resonator, a broad transparency window across a frequency range greater than 0.40 THz is obtained, with a central resonance frequency located at 1.01 THz. Such PIT metamaterials are promising candidates for designing slow light devices, highly sensitive sensors, and nonlinear elements operating over a broad frequency range.
authors.affiliation: Center for Terahertz Waves and College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, People's Republic of China.
authors.forename: Zhihua
authors.initials: Z
authors.lastname: Zhu
authors.forename: Xu
authors.initials: X
authors.lastname: Yang
authors.forename: Jianqiang
authors.initials: J
authors.lastname: Gu
authors.forename: Jun
authors.initials: J
authors.lastname: Jiang
authors.forename: Weisheng
authors.initials: W
authors.lastname: Yue
authors.forename: Zhen
authors.initials: Z
authors.lastname: Tian
authors.forename: Masayoshi
authors.initials: M
authors.lastname: Tonouchi
authors.forename: Jiaguang
authors.initials: J
authors.lastname: Han
authors.forename: Weili
authors.initials: W
authors.lastname: Zhang
mesh_terms: D003198:Computer Simulation; D008420:Manufactured Materials / Q000032:analysis*; D008422:Materials Testing; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure*; D008956:Models, Chemical; D012031:Refractometry / Q000379:methods*; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000379:methods*; D013499:Surface Properties; D055053:Terahertz Radiation