All‐dielectric active terahertz photonics driven by bound states in the continuum
The remarkable emergence of all‐dielectric meta‐photonics governed by the physics of high‐index dielectric materials offers a low‐loss platform for efficient manipulation and subwavelength control of electromagnetic waves from microwaves to visible frequencies. Dielectric metasurfaces can focus elec...
| Main Authors: | , , , , , , , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/141634 |
| _version_ | 1826112449991933952 |
|---|---|
| author | Han, Song Cong, Longqing Srivastava, Yogesh Kumar Qiang, Bo Rybin, Mikhail V. Kumar, Abhishek Jain, Ravikumar Lim, Wen Xiang Achanta, Venu Gopal Prabhu, Shriganesh S. Wang, Qijie Kivshar, Yuri S. Singh, Ranjan |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Han, Song Cong, Longqing Srivastava, Yogesh Kumar Qiang, Bo Rybin, Mikhail V. Kumar, Abhishek Jain, Ravikumar Lim, Wen Xiang Achanta, Venu Gopal Prabhu, Shriganesh S. Wang, Qijie Kivshar, Yuri S. Singh, Ranjan |
| author_sort | Han, Song |
| collection | NTU |
| description | The remarkable emergence of all‐dielectric meta‐photonics governed by the physics of high‐index dielectric materials offers a low‐loss platform for efficient manipulation and subwavelength control of electromagnetic waves from microwaves to visible frequencies. Dielectric metasurfaces can focus electromagnetic waves, generate structured beams and vortices, enhance local fields for advanced sensing, and provide novel functionalities for classical and quantum technologies. Recent advances in meta‐photonics are associated with the exploration of exotic electromagnetic modes called the bound states in the continuum (BICs), which offer a simple interference mechanism to achieve large quality factors (Q) through excitation of supercavity modes in dielectric nanostructures and resonant metasurfaces. Here, a BIC‐driven terahertz metasurface with dynamic control of high‐Q silicon supercavities that are reconfigurable at a nanosecond timescale is experimentally demonstrated. It is revealed that such supercavities enable low‐power, optically induced terahertz switching and modulation of sharp resonances for potential applications in lasing, mode multiplexing, and biosensing. |
| first_indexed | 2024-10-01T03:07:12Z |
| format | Journal Article |
| id | ntu-10356/141634 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:07:12Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1416342023-02-28T20:00:59Z All‐dielectric active terahertz photonics driven by bound states in the continuum Han, Song Cong, Longqing Srivastava, Yogesh Kumar Qiang, Bo Rybin, Mikhail V. Kumar, Abhishek Jain, Ravikumar Lim, Wen Xiang Achanta, Venu Gopal Prabhu, Shriganesh S. Wang, Qijie Kivshar, Yuri S. Singh, Ranjan School of Electrical and Electronic Engineering School of Physical and Mathematical Sciences Centre for Disruptive Photonic Technologies The Photonics Institute Centre for OptoElectronics and Biophotonics Engineering::Electrical and electronic engineering All-dielectric Metasurface Bound States in the Continuum The remarkable emergence of all‐dielectric meta‐photonics governed by the physics of high‐index dielectric materials offers a low‐loss platform for efficient manipulation and subwavelength control of electromagnetic waves from microwaves to visible frequencies. Dielectric metasurfaces can focus electromagnetic waves, generate structured beams and vortices, enhance local fields for advanced sensing, and provide novel functionalities for classical and quantum technologies. Recent advances in meta‐photonics are associated with the exploration of exotic electromagnetic modes called the bound states in the continuum (BICs), which offer a simple interference mechanism to achieve large quality factors (Q) through excitation of supercavity modes in dielectric nanostructures and resonant metasurfaces. Here, a BIC‐driven terahertz metasurface with dynamic control of high‐Q silicon supercavities that are reconfigurable at a nanosecond timescale is experimentally demonstrated. It is revealed that such supercavities enable low‐power, optically induced terahertz switching and modulation of sharp resonances for potential applications in lasing, mode multiplexing, and biosensing. MOE (Min. of Education, S’pore) Accepted version 2020-06-09T10:46:21Z 2020-06-09T10:46:21Z 2019 Journal Article Han, S., Cong, L., Srivastava, Y. K., Qiang, B., Rybin, M. V., Kumar, A., . . . Singh, R. (2019). All‐dielectric active terahertz photonics driven by bound states in the continuum. Advanced Materials, 31(37), 1901921-. doi:10.1002/adma.201901921 0935-9648 https://hdl.handle.net/10356/141634 10.1002/adma.201901921 37 31 en Advanced materials This is the peer reviewed version of the following article: Han, S., Cong, L., Srivastava, Y. K., Qiang, B., Rybin, M. V., Kumar, A., . . . Singh, R. (2019). All‐dielectric active terahertz photonics driven by bound states in the continuum. Advanced Materials, 31(37), 1901921-. doi:10.1002/adma.201901921, which has been published in final form at https://doi.org/10.1002/adma.201901921. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. application/pdf |
| spellingShingle | Engineering::Electrical and electronic engineering All-dielectric Metasurface Bound States in the Continuum Han, Song Cong, Longqing Srivastava, Yogesh Kumar Qiang, Bo Rybin, Mikhail V. Kumar, Abhishek Jain, Ravikumar Lim, Wen Xiang Achanta, Venu Gopal Prabhu, Shriganesh S. Wang, Qijie Kivshar, Yuri S. Singh, Ranjan All‐dielectric active terahertz photonics driven by bound states in the continuum |
| title | All‐dielectric active terahertz photonics driven by bound states in the continuum |
| title_full | All‐dielectric active terahertz photonics driven by bound states in the continuum |
| title_fullStr | All‐dielectric active terahertz photonics driven by bound states in the continuum |
| title_full_unstemmed | All‐dielectric active terahertz photonics driven by bound states in the continuum |
| title_short | All‐dielectric active terahertz photonics driven by bound states in the continuum |
| title_sort | all dielectric active terahertz photonics driven by bound states in the continuum |
| topic | Engineering::Electrical and electronic engineering All-dielectric Metasurface Bound States in the Continuum |
| url | https://hdl.handle.net/10356/141634 |
| work_keys_str_mv | AT hansong alldielectricactiveterahertzphotonicsdrivenbyboundstatesinthecontinuum AT conglongqing alldielectricactiveterahertzphotonicsdrivenbyboundstatesinthecontinuum AT srivastavayogeshkumar alldielectricactiveterahertzphotonicsdrivenbyboundstatesinthecontinuum AT qiangbo alldielectricactiveterahertzphotonicsdrivenbyboundstatesinthecontinuum AT rybinmikhailv alldielectricactiveterahertzphotonicsdrivenbyboundstatesinthecontinuum AT kumarabhishek alldielectricactiveterahertzphotonicsdrivenbyboundstatesinthecontinuum AT jainravikumar alldielectricactiveterahertzphotonicsdrivenbyboundstatesinthecontinuum AT limwenxiang alldielectricactiveterahertzphotonicsdrivenbyboundstatesinthecontinuum AT achantavenugopal alldielectricactiveterahertzphotonicsdrivenbyboundstatesinthecontinuum AT prabhushriganeshs alldielectricactiveterahertzphotonicsdrivenbyboundstatesinthecontinuum AT wangqijie alldielectricactiveterahertzphotonicsdrivenbyboundstatesinthecontinuum AT kivsharyuris alldielectricactiveterahertzphotonicsdrivenbyboundstatesinthecontinuum AT singhranjan alldielectricactiveterahertzphotonicsdrivenbyboundstatesinthecontinuum |