| People | Locations | Statistics |
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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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Helm, Manfred
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2023Room-temperature extended short-wave infrared GeSn photodetectors realized by ion beam techniquescitations
- 2022Band-gap and strain engineering in GeSn alloys using post-growth pulsed laser melting
- 2020Non-plasmonic improvement in photoconductive THz emitters using nano- and micro-structured electrodescitations
- 2019Nanoscale n(++)-p junction formation in GeOI probed by tip-enhanced Raman spectroscopy and conductive atomic force microscopycitations
- 2018Nematicity of correlated systems driven by anisotropic chemical phase separationcitations
- 2017Interplay between localization and magnetism in (Ga,Mn)As and (In,Mn)As
- 2016Ultra-doped n-type germanium thin films for sensing in the mid-infraredcitations
- 2013Forming-free resistive switching in multiferroic BiFeO3 thin films with enhanced nanoscale shuntscitations
- 2011Control of rectifying and resistive switching behavior in BiFeO3 thin filmscitations
- 2011Reduced leakage current in BiFeO3 thin films with rectifying contactscitations
- 2005High-intensity terahertz radiation from a microstructured large-area photoconductorcitations
- 2005Bright green electroluminescence from Tb 3+ in silicon metal-oxide-semiconductor devicescitations
- 2004Efficient ultraviolet electroluminescence from a Gd-implanted silicon metal oxide semiconductor devicecitations
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article
Non-plasmonic improvement in photoconductive THz emitters using nano- and micro-structured electrodes
Abstract
<jats:p>We investigate here terahertz enhancement effects arising from micrometer and nanometer structured electrode features of photoconductive terahertz emitters. Nanostructured electrode based emitters utilizing the palsmonic effect are currently one of the hottest topics in the research field. We demonstrate here that even in the absence of any plasmonic resonance with the pump pulse, such structures can improve the antenna effect by enhancing the local d.c. electric field near the structure edges. Utilizing this effect in Hilbert-fractal and grating-like designs, enhancement of the THz field of up to a factor of ∼ 2 is observed. We conclude that the cause of this THz emission enhancement in our emitters is different from the earlier reported plasmonic-electrode effect in a similar grating-like structure. In our structure, the proximity of photoexcited carriers to the electrodes and local bias field enhancement close to the metallization cause the enhanced efficiency. Due to the nature of this effect, the THz emission efficiency is almost independent of the pump laser polarization. Compared to the plasmonic effect, these effects work under relaxed device fabrication and operating conditions.</jats:p>