@article{Klatt2010Terah-12986,
  year={2010},
  doi={10.1364/OE.18.004939},
  title={Terahertz emission from lateral photo-Dember currents},
  number={5},
  volume={18},
  journal={OPTICS EXPRESS},
  pages={4939--4947},
  author={Klatt, Gregor and Hilser, Florian and Qiao, Wenchao and Beck, Matthias and Gebs, Raphael and Bartels, Albrecht and Huska, Klaus and Lemmer, Ulrich and Bastian, Georg and Johnston, Michael and Fischer, Milan and Faist, Jérôme and Dekorsy, Thomas}
}

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    <dc:creator>Klatt, Gregor</dc:creator>
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    <dc:contributor>Faist, Jérôme</dc:contributor>
    <dc:creator>Lemmer, Ulrich</dc:creator>
    <dc:contributor>Bartels, Albrecht</dc:contributor>
    <dcterms:issued>2010</dcterms:issued>
    <dc:creator>Huska, Klaus</dc:creator>
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    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-05-12T07:48:44Z</dc:date>
    <dc:creator>Bastian, Georg</dc:creator>
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    <dc:creator>Hilser, Florian</dc:creator>
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    <dcterms:bibliographicCitation>first publ. in: OPTICS EXPRESS 18 (2010), 5, pp. 4939-4947</dcterms:bibliographicCitation>
    <dc:contributor>Johnston, Michael</dc:contributor>
    <dc:contributor>Dekorsy, Thomas</dc:contributor>
    <dc:contributor>Huska, Klaus</dc:contributor>
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    <dcterms:abstract xml:lang="eng">The photo-Dember effect is a source of impulsive THz emission following femtosecond pulsed optical excitation. This emission results from the ultrafast spatial separation of electron-hole pairs in strong carrier gradients due to their different diffusion coefficients. The associated time dependent polarization is oriented perpendicular to the excited surface which is inaptly for efficient out coupling of THz radiation. We propose a scheme for generating strong carrier gradients parallel to the excited surface. The resulting photo-Dember currents are oriented in the same direction and emit THz radiation into the favorable direction perpendicular to the surface. This effect is demonstrated for GaAs and In0.53Ga0.47As. Surprisingly the photo-Dember THz emitters provide higher bandwidth than photoconductive emitters. Multiplexing of phase coherent photo-Dember currents by periodically tailoring the photoexcited spatial carrier distribution gives rise to a strongly enhanced THz emission, which reaches electric field amplitudes comparable to a high-efficiency externally biased photoconductive emitter.</dcterms:abstract>
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    <dcterms:title>Terahertz emission from lateral photo-Dember currents</dcterms:title>
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    <dc:contributor>Bastian, Georg</dc:contributor>
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    <dc:creator>Faist, Jérôme</dc:creator>
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