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Proceedings Paper

Frequency-selective sub-mm-W detector based on semiconductor superlattice with a built-in resonator
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Paper Abstract

We propose a design of the frequency-selective sub-mm-W detector, which must operate at room temperature. The idea is based on a standing wave enhancement of the detector responsivity. The detector contains a lateral semiconductor superlattice with electrons performing Bloch oscillations as an active medium, a broadband bow-tie terahertz (THz) antenna, a built-in resonator and an external dc circuit. As compared with well-known THz-photon detector based on one-dimensional layered superlattice the switch to the lateral superlattice leads to a necessary change in technology of antenna attachment to the superlattice and allows the additional growth of a resonator. The estimation calculations of the current responsivity of the proposed detector fulfilled by means of an equivalent transmission line model have proved that the detector responsivity can be enhanced in several hundred times near a resonance frequency due to the matching between the incident radiation and the superlattice provided by built-in resonator. The expected rise time of the proposed detector is in order of 10-11s.

Paper Details

Date Published: 4 November 2004
PDF: 9 pages
Proc. SPIE 5543, Infrared Spaceborne Remote Sensing XII, (4 November 2004); doi: 10.1117/12.561453
Show Author Affiliations
Alexander S. Raspopin, Stevens Institute of Technology (United States)
Hong-Liang Cui, Stevens Institute of Technology (United States)

Published in SPIE Proceedings Vol. 5543:
Infrared Spaceborne Remote Sensing XII
Marija Strojnik, Editor(s)

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