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Broadband semiconductor superlattice detector for THz radiation (2001)

Klappenberger, F. ; Ignatov, A. A. ; Winnerl, S. ; [et al.]

Woodbury, NY : American Institute of Physics (AIP)

Applied Physics Letters 78 (2001), S. 1673-1675

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ISSN: 1077-3118

Source: AIP Digital Archive

Topics: Physics

Notes: 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 frequencies of infrared active phonons of the superlattice. A theoretical analysis of the detector delivers an understanding of the role of phonons and gives a characterization of the responsivity. © 2001 American Institute of Physics.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.1352669

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