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Spectral and Temporal Resolution of THz Detectors based on Quantum Hall Devices with various Geometries

Published online by Cambridge University Press:  01 February 2011

Nikolai G. Kalugin ,
C. Stellmach ,
Yu. Vasilyev ,
A. Hirsch ,
G. Hein ,
B. E. Sǎgol  and
G. Nachtwei
Nikolai G. Kalugin
Affiliation:
[email protected], Texas A&M University, Physics, TAMU 4242, College Station, TX, 77843-4242, United States
C. Stellmach
Affiliation:
[email protected], TU-Braunschweig, Germany
Yu. Vasilyev
Affiliation:
[email protected], A.F.Ioffe Instutute, Russian Federation
A. Hirsch
Affiliation:
[email protected], TU-Braunschweig, Germany
G. Hein
Affiliation:
[email protected], PTB-Braunschweig, Germany
B. E. Sǎgol
Affiliation:
[email protected], PTB-Braunschweig, Germany
G. Nachtwei
Affiliation:
[email protected], TU-Braunschweig, Germany
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Abstract

Quantum Hall (QH) systems can work as very sensitive THz detectors. In this work we report on the spectral and temporal resolution of the QH THz photodetectors with different geometries. The spectral resolution of THz QH detectors is of the order of 1-3 meV depending on bias conditions. The temporal resolution of QH detectors depends on the device geometry. For Corbino-shaped detectors we have demonstrated the devices with response times from 10 ns to over 200 ns.

Keywords

devicesinfrared (IR) spectroscopyHall effect
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 891: Symposium EE – Progress in Semiconductor Materials V – Novel Materials and Electronics and Optoelectronic Applications , 2005 , 0891-EE04-06
Copyright
Copyright © Materials Research Society 2006

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References

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