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InGaAs/InAlAs superlattice detector for THz radiation

  • E. Schomburg
  • , F. Klappenberger
  • , M. Krätschmer
  • , A. Vollnhals
  • , R. Scheuerer
  • , K. F. Renk
  • , V. Ustinov
  • , A. Zhukov
  • , A. Kovsh
  • University of Regensburg
  • The Russian Academy of Sciences

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

We report the use of an InGaAs/InAlAs superlattice for detection of THz radiation pulses generated by a free-electron-laser (FELIX). The detector showed a response corresponding to a reduction of the direct current through the superlattice. The current reduction is attributed to the THz-field induced modulation of Bloch oscillations performed by miniband electrons. The detector response was measured in a frequency range between 4 and 12 THz and showed strong minima at the frequencies of infrared active transverse optic phonons.

Original languageEnglish
Article number1420
Pages (from-to)912-915
Number of pages4
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume13
Issue number2-4
DOIs
StatePublished - 2002
Externally publishedYes

Keywords

  • Detector
  • Phonons
  • Superlattice

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