دورية أكاديمية
Efficient metallic spintronic emitters of ultrabroadband terahertz radiation
| العنوان: | Efficient metallic spintronic emitters of ultrabroadband terahertz radiation |
|---|---|
| المؤلفون: | Seifert, T., Jaiswal, S., Beaurepaire, E., Mokrousov, Y., Oppeneer, P. M., Jourdan, M., Jakob, G., Turchinovich, D., Hayden, L. M., Wolf, M., Münzenberg, M., Kläui, M., Martens, U., Kampfrath, T., Hannegan, J., Braun, L., Maldonado, P., Freimuth, Frank, Kronenberg, A., Henrizi, J., Radu, I. |
| المصدر: | Nature photonics 10, 483–488 (2016). doi:10.1038/nphoton.2016.91 |
| بيانات النشر: | Nature Publ. Group |
| سنة النشر: | 2016 |
| المجموعة: | Forschungszentrum Jülich: JuSER (Juelich Shared Electronic Resources) |
| مصطلحات موضوعية: | info:eu-repo/classification/ddc/530 |
| جغرافية الموضوع: | DE |
| الوصف: | Terahertz electromagnetic radiation is extremely useful for numerous applications, including imaging and spectroscopy. It is thus highly desirable to have an efficient table-top emitter covering the 1–30 THz window that is driven by a low-cost, low-power femtosecond laser oscillator. So far, all solid-state emitters solely exploit physics related to the electron charge and deliver emission spectra with substantial gaps. Here, we take advantage of the electron spin to realize a conceptually new terahertz source that relies on three tailored fundamental spintronic and photonic phenomena in magnetic metal multilayers: ultrafast photoinduced spin currents, the inverse spin-Hall effect and a broadband Fabry–Pérot resonance. Guided by an analytical model, this spintronic route offers unique possibilities for systematic optimization. We find that a 5.8-nm-thick W/CoFeB/Pt trilayer generates ultrashort pulses fully covering the 1–30 THz range. Our novel source outperforms laser-oscillator-driven emitters such as ZnTe(110) crystals in terms of bandwidth, terahertz field amplitude, flexibility, scalability and cost. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | info:eu-repo/semantics/altIdentifier/issn/1749-4893; info:eu-repo/semantics/altIdentifier/issn/1749-4885; info:eu-repo/semantics/altIdentifier/wos/WOS:000378839600015; https://juser.fz-juelich.de/record/809696Test; https://juser.fz-juelich.de/search?p=id:%22FZJ-2016-02625%22Test |
| الإتاحة: | https://doi.org/10.1038/nphoton.2016.91Test https://juser.fz-juelich.de/record/809696Test https://juser.fz-juelich.de/search?p=id:%22FZJ-2016-02625%22Test |
| حقوق: | info:eu-repo/semantics/closedAccess |
| رقم الانضمام: | edsbas.149460CC |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |