Obtaining the Effective Dielectric Permittivity of a Conducting Surface in the Terahertz Range via the Characteristics of Surface Plasmon Polaritons Научная публикация
Журнал |
Applied Sciences (Switzerland)
ISSN: 2076-3417 |
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Вых. Данные | Год: 2023, Том: 13, Номер: 13, Номер статьи : 7898, Страниц : 18 DOI: 10.3390/app13137898 | ||||||||||
Ключевые слова | terahertz plasmonics; surface plasmon polaritons; plasmon Michelson interferometer; dielectric permittivity of metals; conducting surface; thin dielectric layers; free-electron lasers | ||||||||||
Авторы |
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Организации |
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Реферат:
With the intensive development of data transmitting and processing devices in the terahertz (THz) frequency range, an important part of which are integrated plasmonic components and communication lines, it becomes necessary to measure correctly the optical constants of their conductive surfaces. In this paper, we describe a reliable method for determining the effective permittivity εm of a metal surface from the measured characteristics (refractive and absorption indices) of THz surface plasmon polaritons (SPPs). The novelty of the method is the conduction of measurements on a metal surface with a dielectric layer of subwavelength thickness, suppressing the radiative losses of SPPs, which are not taken into account by the SPP dispersion equation. The method is tested on a number of flat “gold sputtering–zinc sulfide layer–air” structures with the use of the THz radiation (λ0 = 141 μm) from the Novosibirsk free electron laser (NovoFEL). The SPP characteristics are determined from interferograms measured with a plasmon Michelson interferometer. It is found that the method allows a significant increase in the accuracy of the εm in comparison with measurements on the same metal surface without a dielectric layer.
Библиографическая ссылка:
Gerasimov V.V.
, Nikitin A.K.
, Lemzyakov A.G.
, Azarov I.A.
, Kotelnikov I.A.
Obtaining the Effective Dielectric Permittivity of a Conducting Surface in the Terahertz Range via the Characteristics of Surface Plasmon Polaritons
Applied Sciences (Switzerland). 2023. V.13. N13. 7898 :1-18. DOI: 10.3390/app13137898 WOS Scopus CAPlus OpenAlex
Obtaining the Effective Dielectric Permittivity of a Conducting Surface in the Terahertz Range via the Characteristics of Surface Plasmon Polaritons
Applied Sciences (Switzerland). 2023. V.13. N13. 7898 :1-18. DOI: 10.3390/app13137898 WOS Scopus CAPlus OpenAlex
Даты:
Поступила в редакцию: | 19 июн. 2023 г. |
Принята к публикации: | 4 июл. 2023 г. |
Опубликована в печати: | 5 июл. 2023 г. |
Опубликована online: | 5 июл. 2023 г. |
Идентификаторы БД:
Web of science: | WOS:001028084200001 |
Scopus: | 2-s2.0-85164958895 |
Chemical Abstracts: | 2023:1469140 |
OpenAlex: | W4383376430 |