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Terahertz Sources and Systems pp 115–124Cite as

Terahertz emission from semiconductor nanostructures

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Part of the book series: NATO Science Series ((NAII,volume 27))

Abstract

We present a study on spontaneous THz emission from semiconductor quantum structures. THz emission from parabolically graded AlGaAs/GaAs quantum wells driven by an in-plane electric field has been measured. We have analyzed the grating coupled radiation in the temperature range from 20 K to 240 K. The peak emission corresponds to the intersubband plasmon in the parabolic potential. From a quantum cascade structure we observe spontaneous THz emission, based on carrier injection into the excited state of a 26 nm quantum well. We have measured luminescence at a photon energy of 17.3 meV with a full linewidth at half maximum of 1.3 meV. In the presence of a magnetic field (B = 7.2 T) applied normal to the epitaxial layers the emission efficiency doubles. This effect is attributed to the suppression of non-radiative Auger-intersubband transitions caused by Landau-quantization of the in-plane electron motion.

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Author information

Authors and Affiliations

  1. Institut für Festkörperelektronik, Technische Universität Wien, A-1040, Wien, Austria

    J. Ulrich, R. Zobl, G. Strasser & K. Unterrainer

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  1. J. Ulrich
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  2. R. Zobl
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  3. G. Strasser
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  4. K. Unterrainer
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Editor information

Editors and Affiliations

  1. University of Leeds, Leeds, UK

    P. Harrison

  2. Université des Sciences et Technologies de Lille, Lille, France

    D. Lippens

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© 2001 Springer Science+Business Media Dordrecht

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Ulrich, J., Zobl, R., Strasser, G., Unterrainer, K. (2001). Terahertz emission from semiconductor nanostructures. In: Miles, R.E., Harrison, P., Lippens, D. (eds) Terahertz Sources and Systems. NATO Science Series, vol 27. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0824-2_8

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  • DOI: https://doi.org/10.1007/978-94-010-0824-2_8

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-0-7923-7097-0

  • Online ISBN: 978-94-010-0824-2

  • eBook Packages: Springer Book Archive

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