Broadband semiconductor superlattice detector for THz radiation

被引：35
|
作者：
Klappenberger, F
Ignatov, AA
Winnerl, S
Schomburg, E
Wegscheider, W
Renk, KF [1 ]
Bichler, M
机构：
[1] Univ Regensburg, Inst Angew Phys, D-93040 Regensburg, Germany
[2] Walter Schottky Inst Munchen, D-85748 Garching, Germany
[3] Russian Acad Sci, Inst Phys Microstruct, Nizhnii Novgorod 603600, Russia
[4] Forschungszentrum Julich, D-52425 Julich, Germany
来源：
APPLIED PHYSICS LETTERS | 2001年 / 78卷 / 12期
关键词：
D O I：
10.1063/1.1352669
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
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. (C) 2001 American Institute of Physics.
引用
收藏
页码：1673 / 1675
页数：3
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