Ultrabroadband single-cycle terahertz pulses with peak fields of 300 kV cm-1 from a metallic spintronic emitter

被引：180

作者：

Seifert, T. ^{[1
]}

Jaiswal, S. ^{[2
,3
]}

Sajadi, M. ^{[1
]}

Jakob, G. ^{[2
]}

Winnerl, S. ^{[4
]}

Wolf, M. ^{[1
]}

Klaeui, M. ^{[2
]}

Kampfrath, T. ^{[1
]}

机构：

[1] Max Planck Gesell, Fritz Haber Inst, Dept Phys Chem, D-14195 Berlin, Germany

[2] Johannes Gutenberg Univ Mainz, Inst Phys, D-55099 Mainz, Germany

[3] Singulus Technol AG, D-63796 Kahl, Germany

[4] Helmholtz Zentrum Dresden Rossendorf, D-01328 Dresden, Germany

来源：

APPLIED PHYSICS LETTERS | 2017年 / 110卷 / 25期

基金：

欧洲研究理事会;

关键词：

GENERATION; MATTER; LIGHT;

D O I：

10.1063/1.4986755

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We explore the capabilities of metallic spintronic thin-film stacks as a source of intense and broadband terahertz electromagnetic fields. For this purpose, we excite a W/CoFeB/Pt trilayer (thickness of 5.6 nm) on a large-area glass substrate (diameter of 7.5 cm) by a femtosecond laser pulse (energy 5.5 mJ, duration 40 fs, and wavelength 800 nm). After focusing, the emitted terahertz pulse is measured to have a duration of 230 fs, a peak field of 300 kV cm(-1), and an energy of 5 nJ. In particular, the waveform exhibits a gapless spectrum extending from 1 to 10 THz at 10% of its amplitude maximum, thereby facilitating nonlinear control over matter in this difficult-to-reach frequency range on the sub-picosecond time scale. Published by AIP Publishing.

引用

页数：5

共 40 条

[1] Narrow-band tunable terahertz emission from ferrimagnetic Mn3-xGa thin films [J].

Awari, N. ;

Kovalev, S. ;

Fowley, C. ;

Rode, K. ;

Gallardo, R. A. ;

Lau, Y. -C. ;

Betto, D. ;

Thiyagarajah, N. ;

Green, B. ;

Yildirim, O. ;

Lindner, J. ;

Fassbender, J. ;

Coey, J. M. D. ;

Deac, A. M. ;

Gensch, M. .

APPLIED PHYSICS LETTERS, 2016, 109 (03)

[2] Significant performance enhancement in photoconductive terahertz optoelectronics by incorporating plasmonic contact electrodes [J].

Berry, C. W. ;

Wang, N. ;

Hashemi, M. R. ;

Unlu, M. ;

Jarrahi, M. .

NATURE COMMUNICATIONS, 2013, 4

[3] Tracking the ultrafast motion of a single molecule by femtosecond orbital imaging [J].

Cocker, Tyler L. ;

Peller, Dominik ;

Yu, Ping ;

Repp, Jascha ;

Huber, Rupert .

NATURE, 2016, 539 (7628) :263-+

[4] Terahertz Kerr effect in gallium phosphide crystal [J].

Cornet, M. ;

Degert, J. ;

Abraham, E. ;

Freysz, E. .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 2014, 31 (07) :1648-1652

[5] Terahertz time-domain spectroscopy characterization of the far-infrared absorption and index of refraction of high-resistivity, float-zone silicon [J].

Dai, JM ;

Zhang, JQ ;

Zhang, WL ;

Grischkowsky, D .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 2004, 21 (07) :1379-1386

[6] Enhanced spin-orbit torques by oxygen incorporation in tungsten films [J].

Demasius, Kai-Uwe ;

Phung, Timothy ;

Zhang, Weifeng ;

Hughes, Brian P. ;

Yang, See-Hun ;

Kellock, Andrew ;

Han, Wei ;

Pushp, Aakash ;

Parkin, Stuart S. P. .

NATURE COMMUNICATIONS, 2016, 7

[7] The 2017 terahertz science and technology roadmap [J].

Dhillon, S. S. ;

Vitiello, M. S. ;

Linfield, E. H. ;

Davies, A. G. ;

Hoffmann, Matthias C. ;

Booske, John ;

Paoloni, Claudio ;

Gensch, M. ;

Weightman, P. ;

Williams, G. P. ;

Castro-Camus, E. ;

Cumming, D. R. S. ;

Simoens, F. ;

Escorcia-Carranza, I. ;

Grant, J. ;

Lucyszyn, Stepan ;

Kuwata-Gonokami, Makoto ;

Konishi, Kuniaki ;

Koch, Martin ;

Schmuttenmaer, Charles A. ;

Cocker, Tyler L. ;

Huber, Rupert ;

Markelz, A. G. ;

Taylor, Z. D. ;

Wallace, Vincent P. ;

Zeitler, J. Axel ;

Sibik, Juraj ;

Korter, Timothy M. ;

Ellison, B. ;

Rea, S. ;

Goldsmith, P. ;

Cooper, Ken B. ;

Appleby, Roger ;

Pardo, D. ;

Huggard, P. G. ;

Krozer, V. ;

Shams, Haymen ;

Fice, Martyn ;

Renaud, Cyril ;

Seeds, Alwyn ;

Stoehr, Andreas ;

Naftaly, Mira ;

Ridler, Nick ;

Clarke, Roland ;

Cunningham, John E. ;

Johnston, Michael B. .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2017, 50 (04)

[8] Focus: Phase-resolved nonlinear terahertz spectroscopy-From charge dynamics in solids to molecular excitations in liquids [J].

Elsaesser, Thomas ;

Reimann, Klaus ;

Woerner, Michael .

JOURNAL OF CHEMICAL PHYSICS, 2015, 142 (21)

[9] Highly efficient scalable monolithic semiconductor terahertz pulse source [J].

Fulop, J. A. ;

Polonyi, Gy. ;

Monoszlai, B. ;

Andriukaitis, G. ;

Balciunas, T. ;

Pugzlys, A. ;

Arthur, G. ;

Baltuska, A. ;

Hebling, J. .

OPTICA, 2016, 3 (10) :1075-1078

[10]

Ganichev S.D., 2006, INTENSE TERAHERTZ EX, P1

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