Broadband semiconductor superlattice detector for THz radiation

DOI to cite this document:: 10.5283/epub.11169

Klappenberger, F.

; Ignatov, A. A. ; Winnerl, S. ; Schomburg, Ekkehard ; Wegscheider, Werner ; Renk, Karl Friedrich ; Bichler, Max

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Date of publication of this fulltext: 30 Nov 2009 13:37

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Abstract

We report on a broadband GaAs/AlAs superlattice detector for THz radiation; a THz field reduces the current through a superlattice, which is carried by miniband electrons, due to modulation of the Bloch oscillations of the miniband electrons. We studied the detector response, by use of a free electron laser, in a large frequency range (5-12 THz). The responsivity showed strong minima at ...