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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Thomson, Thomas
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Topics
Publications (10/10 displayed)
- 2021Spintronic Terahertz Emitters: Status and Prospects from a Materials Perspectivecitations
- 2020PNR study of the phase transition in FeRh thin filmscitations
- 2019Magnetic-field tailoring of the terahertz polarization emitted from a spintronic sourcecitations
- 2018Temperature dependent studies of coupled Fe 55 Pt 45 /Fe 49 Rh 51 thin filmscitations
- 2017Substrate Induced Strain Field in FeRh Epilayers Grown on Single Crystal MgO (001) Substratescitations
- 2017Modeling the thickness dependence of the magnetic phase transition temperature in thin FeRh filmscitations
- 2017Exploring the potential of remote plasma sputtering for the production of L1 0 ordered FePt thin filmscitations
- 2017Analysis of grain size in FePt films fabricated using remote plasma deposition
- 2016Signal Asymmetries in the Anomalous Hall Effect of Bilayer Magnetic Nanostructurescitations
- 2002Quantitative measurement of Cr segregation in Co0.8-xCr xPt0.1B0.1 recording media by scatter diagram analysiscitations
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article
Magnetic-field tailoring of the terahertz polarization emitted from a spintronic source
Abstract
We demonstrate a method to create arbitrary terahertz (THz) polarization profiles by exploiting the magnetic field-dependent emission process of a spintronic source. As a proof-of-concept, we show that by applying a specific magnetic field pattern to the source, it is possible to generate a quadrupole-like THz polarization profile. Experimental measurements of the electric field at the focus of the THz beam revealed a polarity flip in the transverse profile of the quadrupole-like mode with a resulting strong, on-axis longitudinal component of 17.7 kV cm1. This represents an order of magnitude increase in the longitudinal component for the quadrupole-like profile compared to a linear polarization, showing an example of how the magnetic field patterning of a spintronic source can be exploited to obtain desirable THz polarization properties. This unique ability to generate any desired THz polarization profile opens up possibilities for schemes such as rotatable polarization spectroscopy and for efficient mode coupling in various waveguide designs. Furthermore, the strong longitudinal fields that can be generated have applications in areas including intra-subband spectroscopy of semiconductors, non-diffraction limited THz imaging, and particle-beam acceleration.