Terahertz heterodyne receiver with quantum cascade laser and hot electron bolometer mixer in a pulse tube cooler

被引：59

作者：

Richter, H. ^{[1
]}

Semenov, A. D. ^{[1
]}

Pavlov, S. G. ^{[1
]}

Mahler, L. ^{[2
,3
]}

Tredicucci, A. ^{[2
,3
]}

Beere, H. E. ^{[4
]}

Ritchie, D. A. ^{[4
]}

Il'in, K. S. ^{[5
]}

Siegel, M. ^{[5
]}

Huebers, H.-W. ^{[1
]}

机构：

[1] DLR, German Aerosp Ctr, Inst Planetary Res, D-12489 Berlin, Germany

[2] INFM, CNR, NEST, I-56126 Pisa, Italy

[3] Scuola Normale Super Pisa, I-56126 Pisa, Italy

[4] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[5] Univ Karlsruhe, Inst Micro & Nanoelect Syst, D-76187 Karlsruhe, Germany

来源：

APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 14期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1063/1.2988896

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A liquid cryogen-free terahertz heterodyne receiver in a pulse tube cooler has been realized. The receiver operates at 2.5 THz. It is based on a quantum cascade laser (QCL) as local oscillator and a hot electron bolometric mixer. A detailed study of the QCL beam quality yielded a beam propagation factor of 1.1-1.2. The double sideband noise temperature of the system is 2000 K and when corrected for optical losses in the signal path it is similar to 800 K. (C) 2008 American Institute of Physics.

引用

页数：3

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