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| Hauptseite > Publikationsdatenbank > Efficient metallic spintronic emitters of ultrabroadband terahertz radiation > print |
| Hauptseite > Publikationsdatenbank > Efficient metallic spintronic emitters of ultrabroadband terahertz radiation > print |
| 001 | 809696 | ||
| 005 | 20210129223036.0 | ||
| 024 | 7 | _ | |a 10.1038/nphoton.2016.91 |2 doi |
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| 245 | _ | _ | |a Efficient metallic spintronic emitters of ultrabroadband terahertz radiation |
| 260 | _ | _ | |a London [u.a.] |c 2016 |b Nature Publ. Group |
| 336 | 7 | _ | |a article |2 DRIVER |
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| 520 | _ | _ | |a 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. |
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| 700 | 1 | _ | |a Martens, U. |0 P:(DE-HGF)0 |b 2 |
| 700 | 1 | _ | |a Hannegan, J. |0 P:(DE-HGF)0 |b 3 |
| 700 | 1 | _ | |a Braun, L. |0 P:(DE-HGF)0 |b 4 |
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| 700 | 1 | _ | |a Jourdan, M. |0 P:(DE-HGF)0 |b 13 |
| 700 | 1 | _ | |a Jakob, G. |0 P:(DE-HGF)0 |b 14 |
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| 700 | 1 | _ | |a Kampfrath, T. |0 P:(DE-HGF)0 |b 20 |e Corresponding author |
| 773 | _ | _ | |a 10.1038/nphoton.2016.91 |0 PERI:(DE-600)2264673-5 |p 483–488 |t Nature photonics |v 10 |y 2016 |x 1749-4893 |
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