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Terahertz reflectivity of YBa2Cu3O7-δ at cryogenic temperaturesстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 30 сентября 2020 г.
- Авторы: Parshin V.V., Serov E.A., Bubnov G.M., Vdovin V.F., Nikolenko A.S., Lesnov I.V., Gunbina A.A., Smirnov A.V., Malginov V.A., Dolzhenko D.E., Khokhlov D.R.
- Журнал: IEEE Transactions on Applied Superconductivity
- Том: 30
- Номер: 8
- Год издания: 2020
- Издательство: Institute of Electrical and Electronics Engineers
- Местоположение издательства: Piscataway, NJ, United States
- Номер статьи: 9001705
- DOI: 10.1109/TASC.2020.2994964
- Аннотация: Modern space-based telescopes operating in the terahertz (THz) spectral range require highly reflecting and cryogenically cooled optics ensuring extremely low noise. The idea of using high-temperature superconductor YBa2Cu3O7-δas a telescope’s mirror coating for providing low dissipation and high reflectivity of the surface for the sub THz frequency band has been explored. We are presenting here some results of measurements of the reflection losses in YBa2Cu3O7-δat cryogenic and room temperatures (4.2–300 K) in the frequency band 0.166–0.23 THz. High-accuracy measurements of the absolute value of reflectivity have been performed with the help of the resonance technique. The measured reflection losses in the given frequency band were below 1%. For the same frequency range, these values are well above the reflection losses in normal metals such as copper or aluminum, which are normally used to cover mirrors of telescopes. We, therefore, conclude that the use of high-TcsuperconductorsYBa2Cu3O7-δas a highly reflecting coating for the THz telescope’s mirror is not advisable.
- Добавил в систему: Хохлов Дмитрий Ремович