Construction of Optical Topological Cavities Using Photonic Crystals
A novel design of the Fabry–Pérot optical cavity is proposed, utilizing both the topological interface state structures and photonic bandgap materials with a controllable reflection phase. A one-to-one correspondence between the traditional Fabry–Pérot cavity and optical topological cavity is found,...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2021-06-01
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| Series: | Frontiers in Physics |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fphy.2021.697719/full |
| _version_ | 1828975386139033600 |
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| author | Meng Yuan Tao Xu Tao Xu Zhi Hong Hang Zhi Hong Hang |
| author_facet | Meng Yuan Tao Xu Tao Xu Zhi Hong Hang Zhi Hong Hang |
| author_sort | Meng Yuan |
| collection | DOAJ |
| description | A novel design of the Fabry–Pérot optical cavity is proposed, utilizing both the topological interface state structures and photonic bandgap materials with a controllable reflection phase. A one-to-one correspondence between the traditional Fabry–Pérot cavity and optical topological cavity is found, while the tunable reflection phase of the photonic crystal mirrors provides an extra degree of freedom on cavity mode selection. The relationship between the Zak phase and photonic bandgap provides theoretical guidance to the manipulation of the reflection phase of photonic crystals. The dispersions of interface states with different topology origins are explored. Linear interfacial dispersion emerging in photonic crystals with the valley–spin Hall effect leads to an extra n = 0 cavity mode compared to the Zak phase–induced deterministic interface states with quadratic dispersion. The frequency of the n = 0 cavity mode is not affected by the cavity length, whose quality factor can also be tuned by the thickness of the photonic crystal mirrors. With the recent help of topology photonics in the tuning reflection phase and dispersion relationship, we hope our results can provide more intriguing ideas to construct topological optical devices. |
| first_indexed | 2024-12-14T14:20:15Z |
| format | Article |
| id | doaj.art-ef131afee0544459bcd2cea8a16673c7 |
| institution | Directory Open Access Journal |
| issn | 2296-424X |
| language | English |
| last_indexed | 2024-12-14T14:20:15Z |
| publishDate | 2021-06-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Physics |
| spelling | doaj.art-ef131afee0544459bcd2cea8a16673c72022-12-21T22:58:07ZengFrontiers Media S.A.Frontiers in Physics2296-424X2021-06-01910.3389/fphy.2021.697719697719Construction of Optical Topological Cavities Using Photonic CrystalsMeng Yuan0Tao Xu1Tao Xu2Zhi Hong Hang3Zhi Hong Hang4School of Physical Science and Technology and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, ChinaSchool of Physical Science and Technology and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, ChinaShenzhen Kuang-Chi Institute of Advanced Technology, Shenzhen, ChinaSchool of Physical Science and Technology and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, ChinaInstitute for Advanced Study, Soochow University, Suzhou, ChinaA novel design of the Fabry–Pérot optical cavity is proposed, utilizing both the topological interface state structures and photonic bandgap materials with a controllable reflection phase. A one-to-one correspondence between the traditional Fabry–Pérot cavity and optical topological cavity is found, while the tunable reflection phase of the photonic crystal mirrors provides an extra degree of freedom on cavity mode selection. The relationship between the Zak phase and photonic bandgap provides theoretical guidance to the manipulation of the reflection phase of photonic crystals. The dispersions of interface states with different topology origins are explored. Linear interfacial dispersion emerging in photonic crystals with the valley–spin Hall effect leads to an extra n = 0 cavity mode compared to the Zak phase–induced deterministic interface states with quadratic dispersion. The frequency of the n = 0 cavity mode is not affected by the cavity length, whose quality factor can also be tuned by the thickness of the photonic crystal mirrors. With the recent help of topology photonics in the tuning reflection phase and dispersion relationship, we hope our results can provide more intriguing ideas to construct topological optical devices.https://www.frontiersin.org/articles/10.3389/fphy.2021.697719/fullphotonic crystaltopological interface statesreflection phaseZak phasevalley–spin Hall effect |
| spellingShingle | Meng Yuan Tao Xu Tao Xu Zhi Hong Hang Zhi Hong Hang Construction of Optical Topological Cavities Using Photonic Crystals Frontiers in Physics photonic crystal topological interface states reflection phase Zak phase valley–spin Hall effect |
| title | Construction of Optical Topological Cavities Using Photonic Crystals |
| title_full | Construction of Optical Topological Cavities Using Photonic Crystals |
| title_fullStr | Construction of Optical Topological Cavities Using Photonic Crystals |
| title_full_unstemmed | Construction of Optical Topological Cavities Using Photonic Crystals |
| title_short | Construction of Optical Topological Cavities Using Photonic Crystals |
| title_sort | construction of optical topological cavities using photonic crystals |
| topic | photonic crystal topological interface states reflection phase Zak phase valley–spin Hall effect |
| url | https://www.frontiersin.org/articles/10.3389/fphy.2021.697719/full |
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