| Название: | Study of dispersion of the evaporated gold permittivity in terahertz range based on characteristics of surface plasmon polaritons |
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| Авторы и аффилиации: |
Gerasimov V.V. (основной автор / докладчик) Budker Institute of Nuclear Physics, SB RAS Novosibirsk State University Vanda V.S. Budker Institute of Nuclear Physics, SB RAS Novosibirsk State University Lemzyakov A.G. Budker Institute of Nuclear Physics, SB RAS Synchrotron Radiation Facility SKIF Kocheneva A.G. Budker Institute of Nuclear Physics, SB RAS Synchrotron Radiation Facility SKIF Nazmov V.P. Budker Institute of Nuclear Physics, SB RAS Institute of Solid State Chemistry and Mechanochemistry, SB RAS Azarov I.A. Novosibirsk State University Rzhanov Institute of Semiconductor Physics SB RAS Kuznetsova L.S. Novosibirsk State University Rzhanov Institute of Semiconductor Physics SB RAS Ivanov A.I. Rzhanov Institute of Semiconductor Physics SB RAS Nikitin A.К. Scientific and Technological Centre of Unique Instrumentation of RAS |
| Аннотация: | The article presents results on determination of the effective dielectric permittivity of sputtered gold in the wavelength range = 51–357 μm (0.84–6 THz) from such surface plasmon polaritons (SPPs) characteristics as the refractive index and propagation length. The SPPs were generated on 15-cm flat samples containing a 0.8-µm magnetron-sputtered gold layer by radiation of the Novosibirsk free-electron laser. For suppression of radiative losses of SPPs, which deteriorate the measurement correctness, the gold surface was covered with a zinc sulfide layer of submicron thickness, at which the ohmic losses of SPPs significantly exceed the radiative losses. The SPP characteristics were measured with the surface plasmon Michelson interferometer, which gives considerably more reliable results than those gained by other conventional techniques. The obtained dependence qualitatively correlates with calculations engaging the Drude model and reference data for the bulk metal with ideally smooth surface, but the found values are an order of magnitude less than the calculated ones, and an order of magnitude higher than all earlier-published data obtained found from experiments with SPPs. |
| Тип: | Журнал |
| Название журнала: | INFRARED PHYSICS & TECHNOLOGY |
| Том: | 150 |
| Страницы: | 106046 |
| Номера тем гос.задания: | FFNS-2025–0007. |
| DOI: | 10.1016/j.infrared.2025.106046 |
| ISSN: | 1350-4495 |
| Ссылка на страницу в eLIBRARY: | https://www.elibrary.ru/item.asp?id=82862335 |
| eLIBRARY ID: | 82862335 |
| Код EDN: | NYUWFJ |
| Рекомендуемая библиографическая ссылка: | Gerasimov V.V., Vanda V.S., Lemzyakov A.G., Kocheneva A.G., Nazmov V.P., Azarov I.A., Kuznetsova L.S., Ivanov A.I., Nikitin A.К. Study of dispersion of the evaporated gold permittivity in terahertz range based on characteristics of surface plasmon polaritons // INFRARED PHYSICS & TECHNOLOGY. 2025. Vol. 150. P. 106046. EDN: NYUWFJ. DOI: 10.1016/j.infrared.2025.106046. |