Terahertz Perfect Absorber Based on Asymmetric Open-Loop Cross-Dipole Structure
-
Abstract
Equipped with multiple and unique features, a terahertz absorber exhibits great potential for use in the development of communication, military, and other fields where achieving perfect broadband absorption has always been a challenge. We present a metamaterial terahertz (THz) absorber comprising a cross-dipole patch, four symmetric square patches and an asymmetric open-loop patch with a good perfect absorption rate for TE and TM polarizations. The average absorption of more than 96% occurs in the frequency range from 2.4 THz to 3.8 THz, in which the absorptance peak can reach 99.9%, as indicated by simulated results. Our design has broad potential applications in THz couplers, as well as in fields like biology and security. -
-
References
[1] Koenig S, Lopez-Diaz D, Antes J et al. 2013 Nat. Photon. 7 977 doi: 10.1038/nphoton.2013.275[2] Kurt H, Citrin D 2005 Appl. Phys. Lett. 87 041108 doi: 10.1063/1.1999861[3] Watts C M, Liu X, Padilla W J 2012 Adv. Mater. 24 OP181 doi: 10.1002/adma.201290138[4] Fan S, Li T, Zhou J et al. 2017 AIP Adv. 7 115202 doi: 10.1063/1.4996053[5] Tao H, Landy N I, Bingham C M et al. 2008 Opt. Express 16 7181 doi: 10.1364/OE.16.007181[6] Chen H T 2012 Opt. Express 20 7165 doi: 10.1364/OE.20.007165[7] Smith D R, Padilla W J, Vier D et al. 2000 Phys. Rev. Lett. 84 4184 doi: 10.1103/PhysRevLett.84.4184[8] Zhang B, Lv L, He T et al. 2015 Appl. Phys. Lett. 107 093301 doi: 10.1063/1.4930164[9] Kapoor A, Singh G 2000 J. Lightwave Technol. 18 849 doi: 10.1109/50.848397[10] Feng L, Xu Y L, Fegadolli W S et al. 2013 Nat. Mater. 12 108 doi: 10.1038/nmat3495[11] Grady N K, Heyes J E, Chowdhury D R et al. 2013 Science 340 1304 doi: 10.1126/science.1235399[12] Yachmenev A, Lavrukhin D, Glinskiy I et al. 2019 Opt. Eng. 59 061608 doi: 10.1117/1.OE.59.6.061608[13] Li W, Coppens Z J, Besteiro L V et al. 2015 Nat. Commun. 6 8379 doi: 10.1038/ncomms9379[14] Cong L, Pitchappa P, Lee C et al. 2017 Adv. Mater. 29 1700733 doi: 10.1002/adma.201700733[15] Duan G, Schalch J, Zhao X et al. 2018 Opt. Express 26 2242 doi: 10.1364/OE.26.002242[16] Landy N I, Sajuyigbe S, Mock J J et al. 2008 Phys. Rev. Lett. 100 207402 doi: 10.1103/PhysRevLett.100.207402[17] Liu N, Mesch M, Weiss T et al. 2010 Nano Lett. 10 2342 doi: 10.1021/nl9041033[18] Wang M, Huang S Y, Hu R et al. 2019 Chin. Phys. B 28 087804 doi: 10.1088/1674-1056/28/8/087804[19] Low T, Avouris P 2014 ACS Nano 8 1086 doi: 10.1021/nn406627u[20] Tang X P, Yang Z Q, Shi Z J, Lan F 2016 Chin. Phys. Lett. 33 088401 doi: 10.1088/0256-307X/33/8/088401[21] Wang B X, Wang G Z 2018 Plasmonics 13 123 doi: 10.1007/s11468-016-0491-z[22] Islam M R, Kabir M F, Talha K M A et al. 2020 Opt. Eng. 59 016113 doi: 10.1117/1.OE.59.1.016113[23] Paulish A, Gusachenko A, Morozov A et al. 2019 Opt. Eng. 59 061612 doi: 10.1117/1.OE.59.6.061612[24] Fan C Z, Tian Y C, Ren P W et al. 2019 Chin. Phys. B 28 076105 doi: 10.1088/1674-1056/28/7/076105[25] Liu M, Yang Q, Rifat A A et al. 2019 Adv. Opt. Mater. 7 1900736 doi: 10.1002/adom.201900736[26] Duan G, Schalch J, Zhao X et al. 2019 Sens. Actuators A 287 21 doi: 10.1016/j.sna.2018.12.039[27] Daraei O M, Goudarzi K, Bemani M 2020 Opt. Laser Technol. 122 105853 doi: 10.1016/j.optlastec.2019.105853[28] Zhang H, Ling F, Wang H et al. 2020 Opt. Commun. 463 125394 doi: 10.1016/j.optcom.2020.125394[29] Zhong Q, Wang T, Jiang X et al. 2020 Opt. Commun. 458 124637 doi: 10.1016/j.optcom.2019.124637[30] Yan M Y, Sun Z C, Wu B R et al. 2020 Front. Phys. 8 46 doi: 10.3389/fphy.2020.00046[31] Yang P, Qin J, Schalch J, Xu J, Han T C et al. 2019 Acta Phys. Sin. 68 087802 in Chinese doi: 10.7498/aps.68.20182225[32] Soheilifar, M R 2019 Optik 182 702 doi: 10.1016/j.ijleo.2019.01.090[33] Hao S B, Zhang L Z, Ma Y Y, Chen M Y et al. 2019 Chin. Phys. Lett. 36 124205 doi: 10.1088/0256-307X/36/12/124205[34] Wang D T, Wang X C, Zhang X, Yuan H R et al. 2020 Chin. Phys. Lett. 37 045201 doi: 10.1088/0256-307X/37/4/045201[35] Li S H, Li J S 2019 Chin. Phys. B 28 094210 doi: 10.1088/1674-1056/ab33f5[36] Xie Y M, Liu C Y, Ding Z J et al. 2016 Chin. Phys. Lett. 33 094208 doi: 10.1088/0256-307X/33/9/094208[37] Zhao J, Zhang J, Qin C et al. 2016 Chin. Phys. Lett. 33 027801 doi: 10.1088/0256-307X/33/2/027801[38] Wang C F, Li Q S, Wang J S et al. 2016 Chin. Phys. Lett. 33 076802 doi: 10.1088/0256-307X/33/7/076802[39] Wang L, Song W, Hu W, Li G, Luo X et al. 2019 Chin. Phys. B 28 018503 doi: 10.1088/1674-1056/28/1/018503[40] Meng X Q, Chen S L, Fang Y Z, Kou J L 2019 Chin. Phys. B 28 078101 doi: 10.1088/1674-1056/28/7/078101[41] Wang W M, Zhang L L, Li Y T, Sheng Z M, Zhang J 2018 Acta Phys. Sin. 67 124202 in Chinese doi: 10.7498/aps.67.20180564[42] Liu C, Ooi Y K, Islam S, Xing H, Jena D and Zhang J 2018 Appl. Phys. Lett. 112 011101 doi: 10.1063/1.5007835[43] Lu X H, Jing C B, Wang L W et al. 2019 Chin. Phys. Lett. 36 098501 doi: 10.1088/0256-307X/36/9/098501[44] Cheng X T and Liang X G 2017 Chin. Phys. B 26 120505 doi: 10.1088/1674-1056/26/12/120505[45] Xia G, Kou W, Yang L and Du Y C 2017 Chin. Phys. B 26 104403 doi: 10.1088/1674-1056/26/10/104403[46] Jiang S L, Li X F, Su R F, Jia X Q et al. 2017 Chin. Phys. Lett. 34 090701 doi: 10.1088/0256-307X/34/9/090701
DownLoad: