Ma Changwei, Ma Wenying, Tan Yi, et al. High Q-factor terahertz metamaterial based on analog of electromagnetically induced transparency and its sensing characteristics[J]. Opto-Electronic Engineering, 2018, 45(11): 180298. doi: 10.12086/oee.2018.180298
Citation: Ma Changwei, Ma Wenying, Tan Yi, et al. High Q-factor terahertz metamaterial based on analog of electromagnetically induced transparency and its sensing characteristics[J]. Opto-Electronic Engineering, 2018, 45(11): 180298. doi: 10.12086/oee.2018.180298

High Q-factor terahertz metamaterial based on analog of electromagnetically induced transparency and its sensing characteristics

    Fund Project: Supported by the Science and Technology Plan Project of Sichuan Province (2017JY0332), the Science and Technology Innovation Talent Project Funding Project of Sichuan Province (2017097), and the Science Research Foundation Project of Chengdu University of Information Technology (J201505)
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  • A high Q-factor terahertz metamaterial with analog of electromagnetically induced transparency (EIT) effect is designed. The structural unit is composed of double metal wires parallel to each other and a vertical single metal wire in the middle. The single wire, double wires and composite structures are simulated respectively, and the influence of the position and size of the metal wires on the transmittance and quality factor Q of the composite structure is analyzed. The results show that the EIT-like effect occurs with the horizontal shift of the single metal wire and the transmittance and the Q-factor are changed with the increase of the offset distance. Moreover, different Q-factor can be achieved by adjusting the structure and size. By optimization, when the offset distance is 8 μm, a transparent window with 3 dB bandwidth of approximate 11.56 GHz is obtained near 0.73 THz. The corresponding Q-factor is 63.09 and the transmittance is 0.50. Finally, the sensing characteristics of the resonator is measured, showing excellent sensing performance. The refractive index sensitivity is 60.69 GHz/RIU, and FOM value is 5.25/RIU.
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  • [1] Lukin M D, Imamoğlu A. Controlling photons using electromagnetically induced transparency[J]. Nature, 2001, 413(6853): 273-276. doi: 10.1038/35095000

    CrossRef Google Scholar

    [2] Fleischhauer M, Imamoglu A, Marangos J P. Electromagnetically induced transparency: optics in coherent media[J]. Reviews of Modern Physics, 2005, 77(2): 633-673. doi: 10.1103/RevModPhys.77.633

    CrossRef Google Scholar

    [3] Vafapour Z, Alaei H. Subwavelength micro-antenna for achieving slow light at microwave wavelengths via electromagnetically induced transparency in 2D metamaterials[J]. Plasmonics, 2017, 12(5): 1343-1352. doi: 10.1007/s11468-016-0392-1

    CrossRef Google Scholar

    [4] Vafapour Z, Alaei H. Achieving a high Q-factor and tunable slow-light via classical electromagnetically induced transparency (Cl-EIT) in metamaterials[J]. Plasmonics, 2017, 12(2): 479-488. doi: 10.1007/s11468-016-0288-0

    CrossRef Google Scholar

    [5] Zhang S, Genov D A, Wang Y, et al. Plasmon-induced transparency in metamaterials[J]. Physical Review Letters, 2008, 101(4): 047401. doi: 10.1103/PhysRevLett.101.047401

    CrossRef Google Scholar

    [6] Pu M B, Hu C G, Huang C, et al. Investigation of Fano resonance in planar metamaterial with perturbed periodicity[J]. Optics Express, 2013, 21(1): 992-1001. doi: 10.1364/OE.21.000992

    CrossRef Google Scholar

    [7] He X J, Wang L, Wang J M, et al. Electromagnetically induced transparency in planar complementary metamaterial for refractive index sensing applications[J]. Journal of physics D: Applied Physics, 2013, 46(36): 365302. doi: 10.1088/0022-3727/46/36/365302

    CrossRef Google Scholar

    [8] 韩昊, 武东伟, 刘建军, 等.一种太赫兹类电磁诱导透明超材料谐振器[J].光学学报, 2014, 34(4): 0423003.

    Google Scholar

    Han H, Wu D W, Liu J J, et al. A terahertz metamaterial analog of electromagnetically induced transparency[J]. Acta Optica Sinica, 2014, 34(4): 0423003.

    Google Scholar

    [9] Liu C X, Liu P G, Bian L, et al. Dynamically tunable electromagnetically induced transparency analogy in terahertz metamaterial[J]. Optics Communications, 2018, 410: 17-24. doi: 10.1016/j.optcom.2017.09.084

    CrossRef Google Scholar

    [10] Guo Y H, Yan L S, Pan W, et al. Electromagnetically induced transparency (EIT)-like transmission in side-coupled complementary split-ring resonators[J]. Optics Express, 2012, 20(22): 24348-24355. doi: 10.1364/OE.20.024348

    CrossRef Google Scholar

    [11] He Xunjun, Zhang Qinfeng, Lu Guangjun, et al. Tunable ultrasensitive terahertz sensor based on complementary graphene metamaterials[J]. RSC Advances, 2016, 6: 52212-52218. doi: 10.1039/C5RA21974D

    CrossRef Google Scholar

    [12] Lei Wang L, Li T Y, He X J. Switching electromagnetically induced transparency in reconfigurable terahertz metamaterials[J]. Integrated Ferroelectrics, 2015, 161(1): 45-50. doi: 10.1080/10584587.2015.1035194

    CrossRef Google Scholar

    [13] Prakash Pitchappa P, Manjappa M, Ho C P, et al. Active control of electromagnetically induced transparency analog in terahertz MEMS metamaterial[J]. Advanced Optical Materials, 2016, 4(4): 541-547. doi: 10.1002/adom.v4.4

    CrossRef Google Scholar

    [14] 唐雨竹, 马文英, 魏耀华, 等.一种旋转可调的太赫兹超材料及其传感特性[J].光电工程, 2017, 44(4): 453-457. doi: 10.3969/j.issn.1003-501X.2017.04.010

    CrossRef Google Scholar

    Tang Y Z, Ma W Y, Wei Y H, et al. A tunable terahertz metamaterial and its sensing performance[J]. Opto-Electronic Engineering, 2017, 44(4): 453-457. doi: 10.3969/j.issn.1003-501X.2017.04.010

    CrossRef Google Scholar

    [15] Chiam S Y, Singh R, Rockstuhl C, et al. Analogue of electromagnetically induced transparency in a terahertz metamaterial[J]. Physical Review B, 2009, 80(15): 153103. doi: 10.1103/PhysRevB.80.153103

    CrossRef Google Scholar

    [16] Liu X J, Gu J Q, Singh R, et al. Electromagnetically induced transparency in terahertz plasmonic metamaterials via dual excitation pathways of the dark mode[J]. Applied Physics Letters, 2012, 100(13): 131101. doi: 10.1063/1.3696306

    CrossRef Google Scholar

    [17] 孙雅茹, 史同璐, 刘建军, 等.太赫兹超材料类EIT谐振无标记生物传感[J].光学学报, 2016, 36(3): 0328001.

    Google Scholar

    Sun Y R, Shi T L, Liu J J, et al. Terahertz label-free bio-sensing with EIT-Like metamaterials[J]. Acta Optica Sinica, 2016, 36(3): 0328001.

    Google Scholar

    [18] 郑伟, 范飞, 陈猛, 等.基于太赫兹超材料的微流体折射率传感器[J].红外与激光工程. 2017, 46(4): 0420003.

    Google Scholar

    Zheng W, Fan F, Chen M, et al. Terahertz refractive index sensing of microfluid based on metamaterials[J]. Infrared and Laser Engineering, 2017, 46(4): 0420003.

    Google Scholar

  • Overview: A high Q-factor terahertz resonator with analog of electromagnetic induced transparency (EIT) effect is designed on the basis of metamaterial theory. The electromagnetic induced transparency (EIT) is a kind of quantum interference cancellation effect in an atomic system, which makes the opaque medium transparent to the probe. The resonator with the EIT-like effect has important applications in the refractive index sensing. However, the EIT-like metamaterial with tunable Q-factor is more practical. This paper presents a EIT-like terahertz metamaterial with tunable high Q-factor, which is composed of double metal wires parallel to each other and a vertical single metal wire in the middle. In practical applications, the MEMS structure can be used to change the position of the metal wire so as to achieve the purpose of regulating the Q-factor. The commercial simulation software CST is used to simulate the structure, in which the metal is Drude silver and the substrate material is selected by the organic glass. Furthermore, the propagation direction of the incident terahertz wave is perpendicular to the structure plane.

    The wire structures can support the bright mode and dark mode. Through the radiation of the terahertz wave, the bright mode and dark mode are excited directly and indirectly to form resonances. The resonance spectrum superposition between the units forms the cancellation interference to make the plane metamaterial transparent to the incident terahertz wave. The simulation of the bright mode, the dark mode, the symmetric structure, and asymmetric structure are carried out respectively. By analyzing the response of the electric field and the magnetic field, the interaction between them is studied in detail, and the influence of geometric structure and size on the transmittance and the quality factor in the asymmetric condition is also analyzed. The results show that the EIT-like effect occurs with the horizontal shift of the single metal wire and the transmittance and the Q-factor are changed with the increase of the offset distance. Moreover, tunable Q-factor can be achieved by adjusting the structure and size. By optimization, when the offset distance is 8 μm, a transparent window with 3 dB bandwidth of approximate 11.56 GHz is obtained near 0.73 THz. The corresponding Q-factor is 63.09 and the transmittance is 0.50. Finally, the sensing characteristics of the resonator is measured, showing excellent sensing performance. The refractive index sensitivity is 60.69 GHz/RIU, and FOM value is 5.25/RIU.

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