Planar chiral metasurfaces with maximal and tunable chiroptical response driven by bound states in the continuum
Optical metasurfaces with high quality factors (Q-factors) of chiral resonances can boost substantially light-matter interaction for various applications of chiral response in ultrathin, active, and nonlinear metadevices. However, current approaches lack the flexibility to enhance and tune the chira...
| Main Authors: | , , , , , , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/170855 |
| _version_ | 1811692272356425728 |
|---|---|
| author | Tan, Shi Deng, Zi-Lan Geng, Guangzhou Zeng, Xianzhi Zeng, Yixuan Hu, Guangwei Overvig, Adam Li, Junjie Qiu, Cheng-Wei Alù, Andrea Kivshar, Yuri S. Li, Xiangping |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Tan, Shi Deng, Zi-Lan Geng, Guangzhou Zeng, Xianzhi Zeng, Yixuan Hu, Guangwei Overvig, Adam Li, Junjie Qiu, Cheng-Wei Alù, Andrea Kivshar, Yuri S. Li, Xiangping |
| author_sort | Tan, Shi |
| collection | NTU |
| description | Optical metasurfaces with high quality factors (Q-factors) of chiral resonances can boost substantially light-matter interaction for various applications of chiral response in ultrathin, active, and nonlinear metadevices. However, current approaches lack the flexibility to enhance and tune the chirality and Q-factor simultaneously. Here, we suggest a design of chiral metasurface supporting bound state in the continuum (BIC) and demonstrate experimentally chiroptical responses with ultra-high Q-factors and near-perfect circular dichroism (CD = 0.93) at optical frequencies. We employ the symmetry-reduced meta-atoms with high birefringence supporting winding elliptical eigenstate polarizations with opposite helicity. It provides a convenient way for achieving the maximal planar chirality tuned by either breaking in-plane structure symmetry or changing illumination angle. Beyond linear CD, we also achieved strong near-field enhancement CD and near-unitary nonlinear CD in the same planar chiral metasurface design with circular eigen-polarization. Sharply resonant chirality realized in planar metasurfaces promises various practical applications including chiral lasers and chiral nonlinear filters. |
| first_indexed | 2024-10-01T06:33:09Z |
| format | Journal Article |
| id | ntu-10356/170855 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:33:09Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1708552023-10-13T15:40:59Z Planar chiral metasurfaces with maximal and tunable chiroptical response driven by bound states in the continuum Tan, Shi Deng, Zi-Lan Geng, Guangzhou Zeng, Xianzhi Zeng, Yixuan Hu, Guangwei Overvig, Adam Li, Junjie Qiu, Cheng-Wei Alù, Andrea Kivshar, Yuri S. Li, Xiangping School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering Birefringence Chemical Interaction Optical metasurfaces with high quality factors (Q-factors) of chiral resonances can boost substantially light-matter interaction for various applications of chiral response in ultrathin, active, and nonlinear metadevices. However, current approaches lack the flexibility to enhance and tune the chirality and Q-factor simultaneously. Here, we suggest a design of chiral metasurface supporting bound state in the continuum (BIC) and demonstrate experimentally chiroptical responses with ultra-high Q-factors and near-perfect circular dichroism (CD = 0.93) at optical frequencies. We employ the symmetry-reduced meta-atoms with high birefringence supporting winding elliptical eigenstate polarizations with opposite helicity. It provides a convenient way for achieving the maximal planar chirality tuned by either breaking in-plane structure symmetry or changing illumination angle. Beyond linear CD, we also achieved strong near-field enhancement CD and near-unitary nonlinear CD in the same planar chiral metasurface design with circular eigen-polarization. Sharply resonant chirality realized in planar metasurfaces promises various practical applications including chiral lasers and chiral nonlinear filters. Published version The authors acknowledge the funding support provided by National Key R&D Program of China (2021YFB2802003), National Natural Science Foundation of China (NSFC) (62075084, 12074420), Guangdong Basic and Applied Basic Research Foundation (2022B1515020004, 2020A1515010615), Fundamental Research Funds for the Central Universities (21620415), Guangzhou Science and Technology Program (202102020566), Guangdong Provincial Innovation and Entrepreneurship Project (2016ZT06D081), Beijing Municipal Science&Technology Commission &Administrative Commission of Zhongguancun Science Park (Z211100004821009), Air Force Office of Scientific Research, Vannevar Bush Faculty Fellowship, Simons Foundation, and Australian Research Council (grant DP210101292). 2023-10-08T08:14:29Z 2023-10-08T08:14:29Z 2022 Journal Article Tan, S., Deng, Z., Geng, G., Zeng, X., Zeng, Y., Hu, G., Overvig, A., Li, J., Qiu, C., Alù, A., Kivshar, Y. S. & Li, X. (2022). Planar chiral metasurfaces with maximal and tunable chiroptical response driven by bound states in the continuum. Nature Communications, 13(1), 4111-. https://dx.doi.org/10.1038/s41467-022-31877-1 2041-1723 https://hdl.handle.net/10356/170855 10.1038/s41467-022-31877-1 35840567 2-s2.0-85134222397 1 13 4111 en Nature Communications © 2022 The Author(s). This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/ licenses/by/4.0/. application/pdf |
| spellingShingle | Engineering::Electrical and electronic engineering Birefringence Chemical Interaction Tan, Shi Deng, Zi-Lan Geng, Guangzhou Zeng, Xianzhi Zeng, Yixuan Hu, Guangwei Overvig, Adam Li, Junjie Qiu, Cheng-Wei Alù, Andrea Kivshar, Yuri S. Li, Xiangping Planar chiral metasurfaces with maximal and tunable chiroptical response driven by bound states in the continuum |
| title | Planar chiral metasurfaces with maximal and tunable chiroptical response driven by bound states in the continuum |
| title_full | Planar chiral metasurfaces with maximal and tunable chiroptical response driven by bound states in the continuum |
| title_fullStr | Planar chiral metasurfaces with maximal and tunable chiroptical response driven by bound states in the continuum |
| title_full_unstemmed | Planar chiral metasurfaces with maximal and tunable chiroptical response driven by bound states in the continuum |
| title_short | Planar chiral metasurfaces with maximal and tunable chiroptical response driven by bound states in the continuum |
| title_sort | planar chiral metasurfaces with maximal and tunable chiroptical response driven by bound states in the continuum |
| topic | Engineering::Electrical and electronic engineering Birefringence Chemical Interaction |
| url | https://hdl.handle.net/10356/170855 |
| work_keys_str_mv | AT tanshi planarchiralmetasurfaceswithmaximalandtunablechiropticalresponsedrivenbyboundstatesinthecontinuum AT dengzilan planarchiralmetasurfaceswithmaximalandtunablechiropticalresponsedrivenbyboundstatesinthecontinuum AT gengguangzhou planarchiralmetasurfaceswithmaximalandtunablechiropticalresponsedrivenbyboundstatesinthecontinuum AT zengxianzhi planarchiralmetasurfaceswithmaximalandtunablechiropticalresponsedrivenbyboundstatesinthecontinuum AT zengyixuan planarchiralmetasurfaceswithmaximalandtunablechiropticalresponsedrivenbyboundstatesinthecontinuum AT huguangwei planarchiralmetasurfaceswithmaximalandtunablechiropticalresponsedrivenbyboundstatesinthecontinuum AT overvigadam planarchiralmetasurfaceswithmaximalandtunablechiropticalresponsedrivenbyboundstatesinthecontinuum AT lijunjie planarchiralmetasurfaceswithmaximalandtunablechiropticalresponsedrivenbyboundstatesinthecontinuum AT qiuchengwei planarchiralmetasurfaceswithmaximalandtunablechiropticalresponsedrivenbyboundstatesinthecontinuum AT aluandrea planarchiralmetasurfaceswithmaximalandtunablechiropticalresponsedrivenbyboundstatesinthecontinuum AT kivsharyuris planarchiralmetasurfaceswithmaximalandtunablechiropticalresponsedrivenbyboundstatesinthecontinuum AT lixiangping planarchiralmetasurfaceswithmaximalandtunablechiropticalresponsedrivenbyboundstatesinthecontinuum |