Right-Angle Shaped Elements as Dual-Band Metamaterial Absorber in Terahertz

Abstract

Metamaterial absorbers display potential applications in the field of photonics and have been investigated extensively during the last decade. We propose a dual-band resonant metamaterial absorber with right-angle shaped elements (RAEs) in the terahertz range based on numerical simulations. The absorber remains insensitive to a wide range of incidence angles (0°–70°) by showing a minimum absorbance of ~80% at 70°. Furthermore, the proposed absorber is highly independent on any state of polarization of the incidence electromagnetic wave due to the high absorbance, i.e., greater than 80%, recorded for the considered polarization states. To further comprehend the slight variations in absorbance as a function of change in the angle of incidence, the impedance of the structure has been critically examined. The metamaterial absorber is simple in design, and we provide a possible path of fabrication.

Keywords

Metamaterial / absorbance / photonics devices / terahertz

References

[1] Shamonina E, Solymar L. Metamaterials: how the subject started. Metamaterials, 2007, 1(1): 12-18.

[2] Smith D R. Metamaterials and negative refractive index. Science, 2004, 305(5685): 788-792.

[3] Kim J, Han K, Hahn J W. Selective dual-band metamaterial perfect absorber for infrared stealth technology. Scientific Reports, 2017, 7(1): 6740.

[4] Shalaev V M. Optical negative-index metamaterials. Nature Photonics, 2007, 1(1): 41-48.

[5] Fox A M. Optical properties of solids, 2001, Oxford: Oxford University Press

[6] Pendry J B. Negative refraction makes a perfect lens. Physical Review Letters, 2000, 85(18): 3966-3969.

[7] Physical Review B, 2011, 84(7

[8] Cao T, Wei C, Simpson R E, Zhang L, Cryan M J. Broadband polarization-independent perfect absorber using a phase-change metamaterial at visible frequencies. Scientific Reports, 2014, 4, 3955.

[9] Cheng Y, Yang H, Cheng Z, Wu N. Perfect metamaterial absorber based on a split-ring-cross resonator. Applied Physics A, 2011, 102(1): 99-103.

[10] Physical Review Letters, 2008, 100(20

[11] Physical Review B, 2008, 78(24

[12] Aydin K, Ferry V E, Briggs R M, Atwater H A. Broadband polarization-independent resonant light absorption using ultrathin plasmonic super absorbers. Nature Communications, 2011

[13] AIP Advances, 2015, 5(6

[14] Scientific Reports, 2016, 6(1

[15] Ye Y Q, Jin Y, He S. Omnidirectional, polarization-insensitive and broadband thin absorber in the terahertz regime. Journal of the Optical Society of America B, 2010, 27(3): 498.

[16] Applied Physics Letters, 2015, 106(3

[17] Tao H, Landy N I, Bingham C M, Zhang X, Averitt R D, Padilla W J. A metamaterial absorber for the terahertz regime: design, fabrication and characterization. Optics Express, 2008, 16(10): 7181.

[18] Nguyen T T, Lim S. Wide incidence angle-insensitive metamaterial absorber for both TE and TM polarization using eight-circular-sector. Scientific Reports, 2017, 7(1): 3204.

[19] Wu T, Lai J, Wang S, Li X, Huang Y. UV-visible broadband wide-angle polarization-insensitive absorber based on metal groove structures with multiple depths. Applied Optics, 2017, 56(21): 5844.

[20] Applied Optics, 2016, 55(29

[21] AIP Advances, 2016, 6(7

[22] He X J, Wang Y, Wang J, Gui T, Wu Q. Dual-band terahertz metamaterial absorber with polarization insensitivity and wide inciden angle. Progress in Electromagnetics Research, 2011, 115, 381-397.

[23] Optics Letters, 2011, 36(6

[24] Applied Physics Letters, 2009, 95(24

[25] Huang X, Lu C, Rong C, Liu M. Wide-angle perfect metamaterial absorbers based on cave-rings and the complementary patterns. Optical Materials Express, 2018, 8(9): 2520.

[26] Huang X, Lu C, Rong C, Hu Z, Liu M. Multiband ultrathin polarization-insensitive terahertz perfect absorbers with complementary metamaterial and resonator based on high-order electric and magnetic resonances. IEEE Photonics Journal, 2018, 10(6): 1-11.

[27] Cao T, Wang S, Wei C W. Simulation of tunable metamaterial perfect absorber by modulating Bi₂Se₃ dielectric function. Materials Express, 2016, 6(1): 45-52.

[28] Dong W, Qiu Y, Yang J, Simpson R E, Cao T. Wideband absorbers in the visible with ultrathin plasmonic-phase change material nanogratings. The Journal of Physical Chemistry C, 2016, 120(23): 12713-12722.

[29] Cao T, Zhang L, Simpson R E, Cryan M J. Mid-infrared tunable polarization-independent perfect absorber using a phase-change metamaterial. Journal of the Optical Society of America B, 2013, 30(6): 1580.

[30] Cao T, Simpson R E, Cryan M J. Study of tunable negative index metamaterials based on phase-change materials. Journal of the Optical Society of America B, 2013, 30(2): 439.

[31] Cao T, Wei C, Simpson R E, Zhang L, Cryan M J. Rapid phase transition of a phase-change metamaterial perfect absorber. Optical Materials Express, 2013, 3(8): 1101.

[32] Williams G P. Filling the THz gap-high power sources and applications. Reports on Progress in Physics, 2005, 69(2): 301-326.

[33] Holloway C L, Kuester E F, Gordon J A, O’Hara J, Booth J, Smith D R. An overview of the theory and applications of metasurfaces: the two-dimensional equivalents of metamaterials. IEEE Antennas and Propagation Magazine, 2012, 54(2): 10-35.

[34] Yoo Y J, Hwang J S, Lee Y P. Flexible perfect metamaterial absorbers for electromagnetic wave. Journal of Electromagnetic Waves and Applications, 2017, 31(7): 663-715.

[35] Gong C, Zhan M, Yang J, Wang Z, Liu H, Zhao Y, . Broadband terahertz metamaterial absorber based on sectional asymmetric structures. Scientific Reports, 2016, 6(1): 32466.

[36] Liu X, Lan C, Li B, Zhao Q, Zhou J. Dual band metamaterial perfect absorber based on artificial dielectric ‘molecules’. Scientific Reports, 2016, 6(1): 28906.

[37] Applied Physics Letters, 2016, 109(6

[38] Zhang B, Zhao Y, Hao Q, Kiraly B, Khoo I, Chen S, . Polarization-independent dual-band infrared perfect absorber based on a metal-dielectric-metal elliptical nanodisk array. Optics Express, 2011, 19(16): 15221.

[39] Lee H M, Lee H. A dual-band metamaterial absorber based with resonant-magnetic structures. Progress in Electromagnetics Research, 2012, 33, 1-12.

[40] Ma Y, Zhang H, Li Y, Wang Y. Miniaturized and dual-band metamaterial absorber with fractal Sierpinski structure. Journal of the Optical Society of America B, 2014, 31(2): 325.

[41] Rajab K Z, Naftaly M, Linfield E H, Nino J C, Arenas D, Tanner D, . Broadband dielectric characterization of aluminum oxide (Al₂O₃). Journal of Microelectronics and Electronic Packaging, 2008, 5(1): 2-7.

[42] Matsumoto N, Hosokura T, Kageyama K, Takagi H, Sakabe Y, Hangyo M. Analysis of dielectric response of TiO₂ in terahertz frequency region by general harmonic oscillator model. Japanese Journal of Applied Physics, 2008, 47(9): 7725-7728.

[43] Applied Optics, 1998, 37(22

[44] DeVore J R. Refractive indices of rutile and sphalerite. Journal of the Optical Society of America, 1951, 41(6): 416.

[45] Pozar D M. Microwave engineering, 2011 4th Ed USA: Wiley

[46] Daniel S, Bawuah P. Highly polarization and wide-angle insensitive metamaterial absorber for terahertz applications. Optical Materials, 2018 447-452.

[47] Optics Express, 2015, 23(7

[48] Parrott E P J, Zeitler J A, Frišcic T, Pepper M, Jones W, Day G M, . Testing the sensitivity of terahertz spectroscopy to changes in molecular and supramolecular structure: a study of structurally similar cocrystals. Crystal Growth and Design, 2009, 9(3): 1452-1460.

[49] Negishi N, Matsuzawa S, Takeuchi K, Pichat P. Transparent micrometer-thick TiO₂ films on SiO₂-coated glass prepared by repeated dip-coating/calcination: characteristics and photocatalytic activities for removing acetaldehyde or toluene in air. Chemistry of Materials, 2007, 19(15): 3808-3814.