Tuning Q-Factor and Perfect Absorption Using Coupled Tamm States on Polarization-Preserving Metasurface
The circular polarization of light flips its handedness after a conventional metallic mirror reflection. Therefore, a polarization-preserving metasurface is a crucially important element in a series of chiral photonic structures. They include tunable cholesteric LCs and anisotropic photonic crystals...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-12-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/10/12/1391 |
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| author | Natalya V. Rudakova Rashid G. Bikbaev Larisa E. Tyryshkina Stepan Ya. Vetrov Ivan V. Timofeev |
| author_facet | Natalya V. Rudakova Rashid G. Bikbaev Larisa E. Tyryshkina Stepan Ya. Vetrov Ivan V. Timofeev |
| author_sort | Natalya V. Rudakova |
| collection | DOAJ |
| description | The circular polarization of light flips its handedness after a conventional metallic mirror reflection. Therefore, a polarization-preserving metasurface is a crucially important element in a series of chiral photonic structures. They include tunable cholesteric LCs and anisotropic photonic crystals. Chiral structures are rich in interfacial localized modes including Tamm states. In this report, coupled modes formed as a result of the interaction between two chiral optical Tamm states or a chiral optical Tamm state and a chiral Tamm plasmon polariton are analytically and numerically investigated. It is shown that the effective control of coupled modes can be carried out by changing the pitch of the cholesteric and the angle between the optical axis of the cholesteric and the polarization-preserving anisotropic mirror. The influence of the metasurface period on the spectral characteristics of coupled modes is investigated. The possibility of realizing a bound state in the continuum of the Friedrich–Wintgen type, resulting from the destructive interference of coupled modes, which leads to the collapse of the resonance line corresponding to the chiral optical Tamm state, has been demonstrated. |
| first_indexed | 2024-03-08T20:25:55Z |
| format | Article |
| id | doaj.art-4ce60e47a9d5437aa79e20d2d2f40f0b |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-08T20:25:55Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-4ce60e47a9d5437aa79e20d2d2f40f0b2023-12-22T14:33:04ZengMDPI AGPhotonics2304-67322023-12-011012139110.3390/photonics10121391Tuning Q-Factor and Perfect Absorption Using Coupled Tamm States on Polarization-Preserving MetasurfaceNatalya V. Rudakova0Rashid G. Bikbaev1Larisa E. Tyryshkina2Stepan Ya. Vetrov3Ivan V. Timofeev4Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, RussiaKirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, RussiaKirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, RussiaKirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, RussiaKirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, RussiaThe circular polarization of light flips its handedness after a conventional metallic mirror reflection. Therefore, a polarization-preserving metasurface is a crucially important element in a series of chiral photonic structures. They include tunable cholesteric LCs and anisotropic photonic crystals. Chiral structures are rich in interfacial localized modes including Tamm states. In this report, coupled modes formed as a result of the interaction between two chiral optical Tamm states or a chiral optical Tamm state and a chiral Tamm plasmon polariton are analytically and numerically investigated. It is shown that the effective control of coupled modes can be carried out by changing the pitch of the cholesteric and the angle between the optical axis of the cholesteric and the polarization-preserving anisotropic mirror. The influence of the metasurface period on the spectral characteristics of coupled modes is investigated. The possibility of realizing a bound state in the continuum of the Friedrich–Wintgen type, resulting from the destructive interference of coupled modes, which leads to the collapse of the resonance line corresponding to the chiral optical Tamm state, has been demonstrated.https://www.mdpi.com/2304-6732/10/12/1391bound state in the continuumoptical Tamm statecoupled modescholesteric liquid crystalpolarization-preserving metasurface |
| spellingShingle | Natalya V. Rudakova Rashid G. Bikbaev Larisa E. Tyryshkina Stepan Ya. Vetrov Ivan V. Timofeev Tuning Q-Factor and Perfect Absorption Using Coupled Tamm States on Polarization-Preserving Metasurface Photonics bound state in the continuum optical Tamm state coupled modes cholesteric liquid crystal polarization-preserving metasurface |
| title | Tuning Q-Factor and Perfect Absorption Using Coupled Tamm States on Polarization-Preserving Metasurface |
| title_full | Tuning Q-Factor and Perfect Absorption Using Coupled Tamm States on Polarization-Preserving Metasurface |
| title_fullStr | Tuning Q-Factor and Perfect Absorption Using Coupled Tamm States on Polarization-Preserving Metasurface |
| title_full_unstemmed | Tuning Q-Factor and Perfect Absorption Using Coupled Tamm States on Polarization-Preserving Metasurface |
| title_short | Tuning Q-Factor and Perfect Absorption Using Coupled Tamm States on Polarization-Preserving Metasurface |
| title_sort | tuning q factor and perfect absorption using coupled tamm states on polarization preserving metasurface |
| topic | bound state in the continuum optical Tamm state coupled modes cholesteric liquid crystal polarization-preserving metasurface |
| url | https://www.mdpi.com/2304-6732/10/12/1391 |
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