Broadband semiconductor superlattice detector for THz radiation

F. Klappenberger; A. A. Ignatov; S. Winnerl; E. Schomburg; W. Wegscheider; K. F. Renk; M. Bichler

doi:10.1063/1.1352669

Broadband semiconductor superlattice detector for THz radiation

F. Klappenberger, A. A. Ignatov, S. Winnerl, E. Schomburg, W. Wegscheider, K. F. Renk, M. Bichler

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36 Scopus citations

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 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.

Original language	English
Pages (from-to)	1673-1675
Number of pages	3
Journal	Applied Physics Letters
Volume	78
Issue number	12
DOIs	https://doi.org/10.1063/1.1352669
State	Published - 19 Mar 2001
Externally published	Yes

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title = "Broadband semiconductor superlattice detector for THz radiation",

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 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.",

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T1 - Broadband semiconductor superlattice detector for THz radiation

AU - Klappenberger, F.

AU - Ignatov, A. A.

AU - Winnerl, S.

AU - Schomburg, E.

AU - Wegscheider, W.

AU - Renk, K. F.

AU - Bichler, M.

PY - 2001/3/19

Y1 - 2001/3/19

N2 - 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.

AB - 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.

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M3 - Article

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SN - 0003-6951

VL - 78

SP - 1673

EP - 1675

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 12

ER -

Broadband semiconductor superlattice detector for THz radiation

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