Waveguided modes in a planar structure «graphene – thin semiconductor film – graphene»
We investigated optical-range waveguide modes propagating in a semiconductor film sandwiched between two graphene plates. The mode characteristics were shown to depend on the chemical potential of graphene and the film thickness. Based on the numerical analysis, we obtained dispersion relations for...
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| Format: | Article |
| Language: | English |
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Samara National Research University
2020-06-01
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| Series: | Компьютерная оптика |
| Subjects: | |
| Online Access: | http://computeroptics.smr.ru/KO/PDF/KO44-3/440303.pdf |
| _version_ | 1811225544006565888 |
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| author | A.S. Abramov D.A. Evseev D.I. Sementsov |
| author_facet | A.S. Abramov D.A. Evseev D.I. Sementsov |
| author_sort | A.S. Abramov |
| collection | DOAJ |
| description | We investigated optical-range waveguide modes propagating in a semiconductor film sandwiched between two graphene plates. The mode characteristics were shown to depend on the chemical potential of graphene and the film thickness. Based on the numerical analysis, we obtained dispersion relations for the first waveguide modes, frequency dependences of their group and phase velocities, and the distribution of the energy flux density in the structure. We discovered the presence of spectral bands characterized by small phase and negative group velocities of the waveguide modes. The possibility of tuning the waveguide mode by changing the chemical potential of graphene and the thickness of the semiconductor film was established. |
| first_indexed | 2024-04-12T09:09:04Z |
| format | Article |
| id | doaj.art-5a60d5a32e894f2aad6180294bb69c14 |
| institution | Directory Open Access Journal |
| issn | 0134-2452 2412-6179 |
| language | English |
| last_indexed | 2024-04-12T09:09:04Z |
| publishDate | 2020-06-01 |
| publisher | Samara National Research University |
| record_format | Article |
| series | Компьютерная оптика |
| spelling | doaj.art-5a60d5a32e894f2aad6180294bb69c142022-12-22T03:39:00ZengSamara National Research UniversityКомпьютерная оптика0134-24522412-61792020-06-0144332533210.18287/2412-6179-CO-648Waveguided modes in a planar structure «graphene – thin semiconductor film – graphene»A.S. Abramov 0D.A. Evseev1D.I. Sementsov2Ulyanovsk State University, Ulyanovsk, RussiaUlyanovsk State University, Ulyanovsk, RussiaUlyanovsk State University, Ulyanovsk, RussiaWe investigated optical-range waveguide modes propagating in a semiconductor film sandwiched between two graphene plates. The mode characteristics were shown to depend on the chemical potential of graphene and the film thickness. Based on the numerical analysis, we obtained dispersion relations for the first waveguide modes, frequency dependences of their group and phase velocities, and the distribution of the energy flux density in the structure. We discovered the presence of spectral bands characterized by small phase and negative group velocities of the waveguide modes. The possibility of tuning the waveguide mode by changing the chemical potential of graphene and the thickness of the semiconductor film was established.http://computeroptics.smr.ru/KO/PDF/KO44-3/440303.pdfdispersiongraphenesemiconductor waveguide structureslow wavesnegative group velocity |
| spellingShingle | A.S. Abramov D.A. Evseev D.I. Sementsov Waveguided modes in a planar structure «graphene – thin semiconductor film – graphene» Компьютерная оптика dispersion graphene semiconductor waveguide structure slow waves negative group velocity |
| title | Waveguided modes in a planar structure «graphene – thin semiconductor film – graphene» |
| title_full | Waveguided modes in a planar structure «graphene – thin semiconductor film – graphene» |
| title_fullStr | Waveguided modes in a planar structure «graphene – thin semiconductor film – graphene» |
| title_full_unstemmed | Waveguided modes in a planar structure «graphene – thin semiconductor film – graphene» |
| title_short | Waveguided modes in a planar structure «graphene – thin semiconductor film – graphene» |
| title_sort | waveguided modes in a planar structure graphene thin semiconductor film graphene |
| topic | dispersion graphene semiconductor waveguide structure slow waves negative group velocity |
| url | http://computeroptics.smr.ru/KO/PDF/KO44-3/440303.pdf |
| work_keys_str_mv | AT asabramov waveguidedmodesinaplanarstructuregraphenethinsemiconductorfilmgraphene AT daevseev waveguidedmodesinaplanarstructuregraphenethinsemiconductorfilmgraphene AT disementsov waveguidedmodesinaplanarstructuregraphenethinsemiconductorfilmgraphene |