Zobrazeno 1 - 10
of 2 515
pro vyhledávání: '"terahertz emitters"'
Autor:
Kefayati, Ali, Ren, Yafei, Jungfleisch, M. Benjamin, Gundlach, Lars, Xiao, John Q., Nikolic, Branislav K.
Spin current flowing between femtosecond laser pulse (fsLP)-driven ferromagnetic metal and adjacent normal metal (NM) hosting strong spin-orbit coupling is invariably invoked to explain THz radiation believed to be emitted solely by NM layer. Despite
Externí odkaz:
http://arxiv.org/abs/2410.07360
Autor:
Liu, Yongshan, Xu, Yong, Fert, Albert, Jaffres, Henri-Yves, Eimer, Sylvain, Nie, Tianxiao, Zhang, Xiaoqiang, Zhao, Weisheng
Orbitronics devices operate by manipulating orbitally-polarized currents. Recent studies have shown that these orbital currents can be excited by femtosecond laser pulses in ferromagnet as Ni and converted into ultrafast charge current via orbital-to
Externí odkaz:
http://arxiv.org/abs/2402.09228
Autor:
Koleják, Pierre, Lezier, Geoffrey, Vala, Daniel, Mathmann, Baptiste, Halagačka, Lukáš, Gelnárová, Zuzana, Dusch, Yannick, Lampin, Jean-François, Tiercelin, Nicolas, Postava, Kamil, Vanwolleghem, Mathias
Spintronic Terahertz Emitters (STE) represent a significant advancement in source technology, exploiting the ultrafast demagnetization process of spin-electrons to unveil a 30THz wide, gapless spectrum, accessible through femtosecond lasers across th
Externí odkaz:
http://arxiv.org/abs/2402.05833
Autor:
Gueckstock, Oliver, Stojanovic, Nikola, Ha, Yoo Kyung, Hagelschuer, Till, Denker, Andrea, Kourkafas, Giorgious, Seifert, Tom, Kampfrath, Tobias, Gensch, Michael
The radiation hardness of ultrabroadband, spintronic terahertz emitters against gamma and proton irradiation is investigated. We find that irradiation doses equivalent to those experienced by a space instrument en-route to and operated on Mars have a
Externí odkaz:
http://arxiv.org/abs/2401.10672
Autor:
Khalili, Mohsen, Vogel, Tim, Wang, Yicheng, Mansourzadeh, Samira, Singh, Abhishek, Winnnerl, Stephan, Saraceno, Clara J.
Emitters based on photoconductive materials excited by ultrafast lasers are well established and popular devices for THz generation. However, so far, these emitters, both photoconductive antennas and large area emitters, were mostly explored using dr
Externí odkaz:
http://arxiv.org/abs/2402.13940
Autor:
Kefayati, Ali, Nikolic, Branislav K.
Publikováno v:
Phys. Rev. Lett. 133, 136704 (2024)
Microscopic origins of charge currents and electromagnetic (EM) radiation generated by them in spintronic THz emitters -- such as, femtosecond laser pulse-driven single magnetic layer or its heterostructures with a nonmagnetic layer hosting strong sp
Externí odkaz:
http://arxiv.org/abs/2312.04476
Autor:
Paries, Felix, Tiercelin, Nicolas, Lezier, Geoffrey, Vanwolleghem, Mathias, Selz, Felix, Syskaki, Maria-Andromachi, Kammerbauer, Fabian, Jakob, Gerhard, Jourdan, Martin, KlÄui, Mathias, Kaspar, Zdenek, Kampfrath, Tobias, Seifert, Tom S., Von Freymann, Georg, Molter, Daniel
Spintronic terahertz emitters promise terahertz sources with an unmatched broad frequency bandwidth that are easy to fabricate and operate, and therefore easy to scale at low cost. However, current experiments and proofs of concept rely on free-space
Externí odkaz:
http://arxiv.org/abs/2305.01365
Akademický článek
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Akademický článek
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Autor:
Pierre Koleják, Geoffrey Lezier, Daniel Vala, Baptiste Mathmann, Lukáš Halagačka, Zuzana Gelnárová, Yannick Dusch, Jean‐François Lampin, Nicolas Tiercelin, Kamil Postava, Mathias Vanwolleghem
Publikováno v:
Advanced Photonics Research, Vol 5, Iss 11, Pp n/a-n/a (2024)
Optically pumped spintronic terahertz emitters (STEs) have, in less than a decade, strongly impacted terahertz (THz) source technology, by the combination of their Fourier‐limited ultrafast response, their phononless emission spectrum and their wav
Externí odkaz:
https://doaj.org/article/0245d5c9347c44268001babaf985e650
