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

页码：1673 / 1675

页数：3

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