ISSTT Proceedings

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Tunable Antenna-Coupled Intersubband Terahertz (TACIT) Detectors for Operation Above 4K

Authors:
Carey L. Cates, Jon B. Williams, Mark S. Sherwin, Kevin D. Maranowski, Art C. Gossard
Abstract:
The necessity of liquid helium for detectors and sources makes THz space and balloon missions heavy, bulky, and expensive. Tunable Antenna-Coupled Intersubband Terahertz (TACIT) detectors are predicted to operate at temperatures above 4K with good sensitivity. Modeling predicts that TACIT detectors could be operated as direct detectors at 20K with 300K background-limited ,sensitivity. This flexibility in operating temperature comes from the semiconductor quantum well heterostructures that are used in the detectors. Semiconductor materials and processes also give TACIT detectors flexibility in absorption frequency, time constant and other operating parameters. With this flexibility, it is predicted that TACIT detectors could be made fast enough to operate as sensitive mixers with multi-Gigahertz bandwidths. A process for making TACIT detectors has been developed. A brief description of TACIT detector fabrication and operation is presented. Flexibility i n TACIT detector operating parameters is discussed.
Categories:
Poster Session
Year:
2000
Session:
7
Full-text:
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Page Number(s):
389-396