Coherent perfect absorption and laser modes in a cylindrical structure of conjugate metamaterials
In this work, we theoretically find that coherent perfect absorption (CPA) and laser modes can be realized in a two-dimensional cylindrical structure composed of conjugate metamaterials (CMs). The required phase factors of CMs for achieving CPA and laser modes are determined by the geometric size of...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2018-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/aa9cbd |
| _version_ | 1797750672652763136 |
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| author | Yangyang Fu Yadong Xu Huanyang Chen Steven A Cummer |
| author_facet | Yangyang Fu Yadong Xu Huanyang Chen Steven A Cummer |
| author_sort | Yangyang Fu |
| collection | DOAJ |
| description | In this work, we theoretically find that coherent perfect absorption (CPA) and laser modes can be realized in a two-dimensional cylindrical structure composed of conjugate metamaterials (CMs). The required phase factors of CMs for achieving CPA and laser modes are determined by the geometric size of the CM cylinder, which is a unique feature compared with other non-Hermitian optical systems. Based on this property, we also demonstrate that CPA and laser modes can exist simultaneously in a CM cylinder with an extremely large size, where the excitations of CPA and laser modes depend on the angular momentum of coherent incident light. Therefore, compared with the well known parity time symmetry, our work opens up a brand-new path to obtaining CPA and laser modes, and is a significant advance in non-Hermitian optical systems. |
| first_indexed | 2024-03-12T16:37:15Z |
| format | Article |
| id | doaj.art-30f583acc25643ff94f7516417de4e50 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:37:15Z |
| publishDate | 2018-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-30f583acc25643ff94f7516417de4e502023-08-08T14:49:16ZengIOP PublishingNew Journal of Physics1367-26302018-01-0120101301510.1088/1367-2630/aa9cbdCoherent perfect absorption and laser modes in a cylindrical structure of conjugate metamaterialsYangyang Fu0Yadong Xu1https://orcid.org/0000-0002-3832-820XHuanyang Chen2Steven A Cummer3College of Physics, Optoelectronics and Energy, Soochow University , No.1 Shizi Street, Suzhou 215006, People’s Republic of China; Institute of Electromagnetics and Acoustics and Department of Electronic Science, Xiamen University , Xiamen 361005, People’s Republic of China; Department of Electrical and Computer Engineering, Duke University , Durham, North Carolina 27708, United States of AmericaCollege of Physics, Optoelectronics and Energy, Soochow University , No.1 Shizi Street, Suzhou 215006, People’s Republic of ChinaInstitute of Electromagnetics and Acoustics and Department of Electronic Science, Xiamen University , Xiamen 361005, People’s Republic of ChinaDepartment of Electrical and Computer Engineering, Duke University , Durham, North Carolina 27708, United States of AmericaIn this work, we theoretically find that coherent perfect absorption (CPA) and laser modes can be realized in a two-dimensional cylindrical structure composed of conjugate metamaterials (CMs). The required phase factors of CMs for achieving CPA and laser modes are determined by the geometric size of the CM cylinder, which is a unique feature compared with other non-Hermitian optical systems. Based on this property, we also demonstrate that CPA and laser modes can exist simultaneously in a CM cylinder with an extremely large size, where the excitations of CPA and laser modes depend on the angular momentum of coherent incident light. Therefore, compared with the well known parity time symmetry, our work opens up a brand-new path to obtaining CPA and laser modes, and is a significant advance in non-Hermitian optical systems.https://doi.org/10.1088/1367-2630/aa9cbdcoherent perfect absorptionlaserconjugate metamaterialscylindrical structureangular momentumnon-Hermitian |
| spellingShingle | Yangyang Fu Yadong Xu Huanyang Chen Steven A Cummer Coherent perfect absorption and laser modes in a cylindrical structure of conjugate metamaterials New Journal of Physics coherent perfect absorption laser conjugate metamaterials cylindrical structure angular momentum non-Hermitian |
| title | Coherent perfect absorption and laser modes in a cylindrical structure of conjugate metamaterials |
| title_full | Coherent perfect absorption and laser modes in a cylindrical structure of conjugate metamaterials |
| title_fullStr | Coherent perfect absorption and laser modes in a cylindrical structure of conjugate metamaterials |
| title_full_unstemmed | Coherent perfect absorption and laser modes in a cylindrical structure of conjugate metamaterials |
| title_short | Coherent perfect absorption and laser modes in a cylindrical structure of conjugate metamaterials |
| title_sort | coherent perfect absorption and laser modes in a cylindrical structure of conjugate metamaterials |
| topic | coherent perfect absorption laser conjugate metamaterials cylindrical structure angular momentum non-Hermitian |
| url | https://doi.org/10.1088/1367-2630/aa9cbd |
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