High Q-factor controllable phononic modes in hybrid phononic–dielectric structures
Phonon polariton resonances in the mid-infrared spectral range demonstrate properties superior to noble metal-based plasmonics, owing to smaller dissipative loss and better field confinement. However, a conventional way to excite the localized phonon resonance involves ion etching, which reduces the...
| Main Authors: | , , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2021
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/147698 |
| _version_ | 1826115840583401472 |
|---|---|
| author | Qiang, Bo Dubrovkin, Alexander M. Krishnamoorthy, Harish N. S. Wang, Qian Soci, Cesare Zhang, Ying Teng, Jinghua Wang, Qi Jie |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Qiang, Bo Dubrovkin, Alexander M. Krishnamoorthy, Harish N. S. Wang, Qian Soci, Cesare Zhang, Ying Teng, Jinghua Wang, Qi Jie |
| author_sort | Qiang, Bo |
| collection | NTU |
| description | Phonon polariton resonances in the mid-infrared spectral range demonstrate properties superior to noble metal-based plasmonics, owing to smaller dissipative loss and better field confinement. However, a conventional way to excite the localized phonon resonance involves ion etching, which reduces the attainable quality factors (Q-factors) of the resonators. We show that by introducing a deep subwavelength layer of dielectric gratings on a phononic substrate, localized dipolar resonance and higher order modes with high Q-factors 96 and 195, respectively, can be excited. We further demonstrate, via experiments and simulations, that the resonant wavelength and field confinement can be controlled by coupling the localized hybrid mode with propagating surface phonon-polaritons. We also observed for the first time the coupling between a localized dipolar mode and a propagating higher-order surface phonon-polariton mode. The results will be useful in designing on-chip, low-loss, and highly integrated phononic devices in the infrared spectral domain. |
| first_indexed | 2024-10-01T04:02:02Z |
| format | Journal Article |
| id | ntu-10356/147698 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:02:02Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1476982022-07-21T07:40:04Z High Q-factor controllable phononic modes in hybrid phononic–dielectric structures Qiang, Bo Dubrovkin, Alexander M. Krishnamoorthy, Harish N. S. Wang, Qian Soci, Cesare Zhang, Ying Teng, Jinghua Wang, Qi Jie School of Materials Science and Engineering Singapore Institute of Manufacturing Technology, A*STAR Centre for Disruptive Photonic Technologies (CDPT) Centre for OptoElectronics and Biophotonics (OPTIMUS) A*STAR Institute of Material Research and Engineering Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics Hybrid Resonance High Q-factor Phonon polariton resonances in the mid-infrared spectral range demonstrate properties superior to noble metal-based plasmonics, owing to smaller dissipative loss and better field confinement. However, a conventional way to excite the localized phonon resonance involves ion etching, which reduces the attainable quality factors (Q-factors) of the resonators. We show that by introducing a deep subwavelength layer of dielectric gratings on a phononic substrate, localized dipolar resonance and higher order modes with high Q-factors 96 and 195, respectively, can be excited. We further demonstrate, via experiments and simulations, that the resonant wavelength and field confinement can be controlled by coupling the localized hybrid mode with propagating surface phonon-polaritons. We also observed for the first time the coupling between a localized dipolar mode and a propagating higher-order surface phonon-polariton mode. The results will be useful in designing on-chip, low-loss, and highly integrated phononic devices in the infrared spectral domain. Ministry of Education (MOE) National Medical Research Council (NMRC) National Research Foundation (NRF) Published version This work was supported by funding from the Ministry of Education, Singapore (Grant Nos. MOE2016-T2-2-159, MOE2016-T2-1-128, MOE2015-T2-2-007, and MOE Tier 1 RG164/15), the National Research Foundation, Competitive Research Program (No. NRF-CRP18-2017-02), and NSFC (No. 61704082). A.D. acknowledges funding support from the Singapore Ministry of Education Academic Research Funds Tier 3 under Grant No. MOE2016-T3-1-006 (S). 2021-04-13T05:55:29Z 2021-04-13T05:55:29Z 2019 Journal Article Qiang, B., Dubrovkin, A. M., Krishnamoorthy, H. N. S., Wang, Q., Soci, C., Zhang, Y., Teng, J. & Wang, Q. J. (2019). High Q-factor controllable phononic modes in hybrid phononic–dielectric structures. Advanced Photonics, 1(2), 026001-. https://dx.doi.org/10.1117/1.AP.1.2.026001 026001 (2019) https://hdl.handle.net/10356/147698 10.1117/1.AP.1.2.026001 2 1 026001 en MOE2016-T2-2-159 MOE2016-T2-1-128 MOE2015-T2-2-007 MOE Tier 1 RG164/15 NRF-CRP18-2017-02 NSFC (No. 61704082) MOE2016-T3-1-006 (S) Advanced Photonics © 2019 The Authors. Published by SPIE and CLP under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI. application/pdf |
| spellingShingle | Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics Hybrid Resonance High Q-factor Qiang, Bo Dubrovkin, Alexander M. Krishnamoorthy, Harish N. S. Wang, Qian Soci, Cesare Zhang, Ying Teng, Jinghua Wang, Qi Jie High Q-factor controllable phononic modes in hybrid phononic–dielectric structures |
| title | High Q-factor controllable phononic modes in hybrid phononic–dielectric structures |
| title_full | High Q-factor controllable phononic modes in hybrid phononic–dielectric structures |
| title_fullStr | High Q-factor controllable phononic modes in hybrid phononic–dielectric structures |
| title_full_unstemmed | High Q-factor controllable phononic modes in hybrid phononic–dielectric structures |
| title_short | High Q-factor controllable phononic modes in hybrid phononic–dielectric structures |
| title_sort | high q factor controllable phononic modes in hybrid phononic dielectric structures |
| topic | Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics Hybrid Resonance High Q-factor |
| url | https://hdl.handle.net/10356/147698 |
| work_keys_str_mv | AT qiangbo highqfactorcontrollablephononicmodesinhybridphononicdielectricstructures AT dubrovkinalexanderm highqfactorcontrollablephononicmodesinhybridphononicdielectricstructures AT krishnamoorthyharishns highqfactorcontrollablephononicmodesinhybridphononicdielectricstructures AT wangqian highqfactorcontrollablephononicmodesinhybridphononicdielectricstructures AT socicesare highqfactorcontrollablephononicmodesinhybridphononicdielectricstructures AT zhangying highqfactorcontrollablephononicmodesinhybridphononicdielectricstructures AT tengjinghua highqfactorcontrollablephononicmodesinhybridphononicdielectricstructures AT wangqijie highqfactorcontrollablephononicmodesinhybridphononicdielectricstructures |