Ultrafast two-dimensional electron gas detector and mixer for terahertz radiation

被引：26

作者：

Yngvesson, KS ^{[1
]}

机构：

[1] Univ Massachusetts, Dept Elect & Comp Engn, Amherst, MA 01003 USA

来源：

APPLIED PHYSICS LETTERS | 2000年 / 76卷 / 06期

关键词：

D O I：

10.1063/1.125892

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A hot-electron bolometric detector and mixer (heterodyne detector), which uses the nonlinearities of the heated two-dimensional electron gas medium, is proposed and analyzed. The cooling process of the detector is through diffusion of the electrons into the contacts; a time constant of 1 ps and responsivity of 3000 V/W are calculated for a device which is 0.8 mu m long. The predicted double-sideband receiver noise temperature for the mixer version is in the range 1000-2000 K at 1 THz, with a 100 GHz intermediate frequency bandwidth. The operating temperature would be 77 K and the local oscillator power 1 mu W. (C) 2000 American Institute of Physics. [S0003-6951(00)00306-5].

引用

页码：777 / 779

页数：3

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