Ultra-thin grating coupler for guided exciton-polaritons in WS2 multilayers
An ultra-thin transition metal dichalcogenide (TMDC) layer can support guided exciton-polariton modes due to the strong coupling between excitons and photons. Herein, we report the guided mode resonance in an ultra-thin TMDC grating structure. Owing to the strong exciton resonances in TMDCs, a TMDC...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2023-02-01
|
| Series: | Nanophotonics |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/nanoph-2022-0791 |
| _version_ | 1797789036995149824 |
|---|---|
| author | Cho HyunHee Shin Dong-Jin Sung Junghyun Gong Su-Hyun |
| author_facet | Cho HyunHee Shin Dong-Jin Sung Junghyun Gong Su-Hyun |
| author_sort | Cho HyunHee |
| collection | DOAJ |
| description | An ultra-thin transition metal dichalcogenide (TMDC) layer can support guided exciton-polariton modes due to the strong coupling between excitons and photons. Herein, we report the guided mode resonance in an ultra-thin TMDC grating structure. Owing to the strong exciton resonances in TMDCs, a TMDC grating structure shows guided-mode resonance even at a thickness limit of ∼10 nm and is capable of realizing polaritonic dispersion in a monolithic grating structure. We investigated the polarization and thickness dependence of the optical dispersion relations of the tungsten disulfide (WS2) grating structure. In addition, we confirmed that the monolithic WS2 grating coupler can be used to couple the near-field guided exciton-polariton out into the far field. We believe that ultra-thin TMDC layers can facilitate sub-wavelength nanophotonic applications. |
| first_indexed | 2024-03-13T01:44:07Z |
| format | Article |
| id | doaj.art-cd9185dbd48d48a3b0a55b2c3980b940 |
| institution | Directory Open Access Journal |
| issn | 2192-8614 |
| language | English |
| last_indexed | 2024-03-13T01:44:07Z |
| publishDate | 2023-02-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj.art-cd9185dbd48d48a3b0a55b2c3980b9402023-07-03T10:20:09ZengDe GruyterNanophotonics2192-86142023-02-0112132563257110.1515/nanoph-2022-0791Ultra-thin grating coupler for guided exciton-polaritons in WS2 multilayersCho HyunHee0Shin Dong-Jin1Sung Junghyun2Gong Su-Hyun3Department of Physics, Korea University, Seoul02841, South KoreaDepartment of Physics, Korea University, Seoul02841, South KoreaDepartment of Physics, Korea University, Seoul02841, South KoreaDepartment of Physics, Korea University, Seoul02841, South KoreaAn ultra-thin transition metal dichalcogenide (TMDC) layer can support guided exciton-polariton modes due to the strong coupling between excitons and photons. Herein, we report the guided mode resonance in an ultra-thin TMDC grating structure. Owing to the strong exciton resonances in TMDCs, a TMDC grating structure shows guided-mode resonance even at a thickness limit of ∼10 nm and is capable of realizing polaritonic dispersion in a monolithic grating structure. We investigated the polarization and thickness dependence of the optical dispersion relations of the tungsten disulfide (WS2) grating structure. In addition, we confirmed that the monolithic WS2 grating coupler can be used to couple the near-field guided exciton-polariton out into the far field. We believe that ultra-thin TMDC layers can facilitate sub-wavelength nanophotonic applications.https://doi.org/10.1515/nanoph-2022-07911d photonic crystalexciton-polaritongrating couplerguided mode resonancetransition metal dichalcogenidetungsten disulfide |
| spellingShingle | Cho HyunHee Shin Dong-Jin Sung Junghyun Gong Su-Hyun Ultra-thin grating coupler for guided exciton-polaritons in WS2 multilayers Nanophotonics 1d photonic crystal exciton-polariton grating coupler guided mode resonance transition metal dichalcogenide tungsten disulfide |
| title | Ultra-thin grating coupler for guided exciton-polaritons in WS2 multilayers |
| title_full | Ultra-thin grating coupler for guided exciton-polaritons in WS2 multilayers |
| title_fullStr | Ultra-thin grating coupler for guided exciton-polaritons in WS2 multilayers |
| title_full_unstemmed | Ultra-thin grating coupler for guided exciton-polaritons in WS2 multilayers |
| title_short | Ultra-thin grating coupler for guided exciton-polaritons in WS2 multilayers |
| title_sort | ultra thin grating coupler for guided exciton polaritons in ws2 multilayers |
| topic | 1d photonic crystal exciton-polariton grating coupler guided mode resonance transition metal dichalcogenide tungsten disulfide |
| url | https://doi.org/10.1515/nanoph-2022-0791 |
| work_keys_str_mv | AT chohyunhee ultrathingratingcouplerforguidedexcitonpolaritonsinws2multilayers AT shindongjin ultrathingratingcouplerforguidedexcitonpolaritonsinws2multilayers AT sungjunghyun ultrathingratingcouplerforguidedexcitonpolaritonsinws2multilayers AT gongsuhyun ultrathingratingcouplerforguidedexcitonpolaritonsinws2multilayers |