-
Bound states in the continuum (BIC) were initially observed in quantum mechanics as a phenomenon capable of maintaining localized wave behavior. This effect has been extensively studied across various material systems, including piezoelectric materials, graphene, and photonic crystals. Recently, the BIC mode has employed to achieve strong optical chirality in metamaterials with symmetry breaking. In this work, we propose a silicon metasurface with an interrupted ring groove, which has a fourfold rotationally symmetry. By breaking the in-plane inversion symmetry of the unit cell, we achieve quasi-BICs with the high quality factor and conspicuous chirality. Moreover, with the analysis of topological charges in momentum space, we reveal that the unique topological characteristics of quasi-BIC was generated by the internal resonance of metasurface. With an appropriate degree of symmetry breaking, our proposed symmetry-broken metasurface exhibits a strong circular dichroism with value of -0.93, which demonstrates the quasi-BIC mode enables a strong chiral selectivity. For chiral sensing applications, the chiral metasurface exhibits a spectral resolution of approximately 0.003. The findings presented in this work are of great promise for applications in chiral sensing, nonlinear chiral optics, low-threshold lasers, and other related fields.
-
Keywords:
- bound state in the continuum /
- metasurface /
- chirality /
- circular dichroism
-
[1] Borovkova O V, Ignatyeva D O, Sekatskii S K, Karabchevsky A, Belotelov V I 2019 Photonics Res. 8 57.
[2] Daldosso N, Pavesi L 2009 Laser Photon. Rev. 3 508.
[3] Kekatpure R D, Brongersma M L 2008 Phys. Rev. A 78 023829.
[4] Lim W X, Singh R 2018 Nano Converg. 5 5.
[5] Rybin M V, Koshelev K L, Sadrieva Z F, Samusev K B, Bogdanov A A. Limonov M F, Kivshar Y S 2017 Phys. Rev. Lett. 119 243901.
[6] Srinivasan K, Stintz A, Krishna S, Painter O 2005 Phys. Rev. B 72 205318.
[7] Azzam S I, Kildishev A V 2020 Adv. Opt. Mater. 9 2001469.
[8] Koshelev K, Bogdanov A, Kivshar Y 2019 Science Bulletin 64 836.
[9] Kupriianov A S, Xu Y, Sayanskiy A, Dmitriev V, Kivshar Y S, Tuz V R 2019 Phys. Rev. Appl. 12 014024.
[10] Marinica D C, Borisov A G, Shabanov S V 2008 Phys. Rev. Lett. 100 183902.
[11] Koshelev K, Lepeshov S, Liu M, Bogdanov A, Kivshar Y 2018 Phys. Rev. Lett. 121 193903.
[12] Kodigala A, Lepetit T, Gu Q, Bahari B, Fainman Y, Kante B 2017 Nature 541 196.
[13] Pavlov A, Zabkov I, Klimov V 2018 Opt. Express 26 28948.
[14] Xu K, Fang M, Huang Z 2021 IEEE Photonics J. 13 1.
[15] Abujetas D R, Barreda Á, Moreno F, Litman A, Geffrin J M, Sánchez‐Gil J A 2020 Laser Photonics Rev. 15 2000263.
[16] Volkovskaya I, Xu L, Huang L, Smirnov A I, Miroshnichenko A E, Smirnova D 2020 Nanophotonics 9 3953.
[17] Koshelev K, Tang Y, Li K, Choi D-Y, Li G, Kivshar Y 2019 ACS Photonics 6 1639.
[18] Panoiu N C, Sha W E I, Lei D Y, Li G C 2018 J. Opt. 20 083001.
[19] Ren Q, Feng F, Yao X, Xu Q, Xin M, Lan Z, You J, Xiao X, Sha W E I 2021 Opt. Express 29 5384.
[20] Cai Y, Huang Y, Zhu K, Wu H 2021 Opt. Lett. 46 4049.
[21] Yu S, Wang Y, Gao Z, Li H, Song S, Yu J, Zhao T 2022 Opt. Express 30 4084.
[22] Kilchoer C, Abdollahi N, Steiner U, Gunkel I, Wilts B D 2019 APL Photonics 4 126107.
[23] Wu Z, Liu Y, Hill E H, Zheng Y 2018 Nanoscale 10 18096.
[24] Yang S, Liu Z, Yang H, Jin A, Zhang S, Li J, Gu C 2019 Adv. Opt. Mater. 8 1901448.
[25] Basiri A, Chen X, Bai J, Amrollahi P, Carpenter J, Holman Z, Wang C, Yao Y 2019 Light Sci Appl 8 78.
[26] Fasold S, Linß S, Kawde T, Falkner M, Decker M, Pertsch T, Staude I 2018 ACS Photonics 5 1773.
[27] Kan Y, Andersen S K H, Ding F, Kumar S, Zhao C, Bozhevolnyi S I 2020 Adv. Mater. 32 1907832.
[28] Zhiguang Liu H D, Jiafang Li, Ling Lu, Zhi-Yuan Li, Nicholas X. Fang 2018 Sci. Adv. 4 eaat4436.
[29] Zhao Y, Askarpour A N, Sun L, Shi J, Li X, Alu A 2017 Nat. Commun. 8 14180.
[30] Hao C, Xu L, Kuang H, Xu C 2020 Adv. Mater. 32 e1802075.
[31] Gorkunov M V, Antonov A A, Kivshar Y S 2020 Phys. Rev. Lett. 125 093903.
[32] Overvig A, Yu N, Alu A 2021 Phys. Rev. Lett. 126 073001.
[33] Yu K, Song F, Shi Z, Li H, Liu Y, Wu X 2023 J. Opt. 25 125101.
[34] Palik E D. Handbook of Optical Constants of Solids. 1985: xvii-xviii.
[35] Zhen B, Hsu C W, Lu L, Stone A D, Soljačić M 2014 Phys. Rev. Lett. 113 257401.
[36] Chen Y, Yang X, Gao J 2018 Light Sci.Appl. 7 84.
Metrics
- Abstract views: 111
- PDF Downloads: 2
- Cited By: 0
下载:
