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Proceedings Paper

Photomixer transceiver
Author(s): Simon Verghese; K. Alexander McIntosh; Steve Calawa; William F. DiNatale; Erik K. Duerr; L. H. Mahoney
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Paper Abstract

Two low-temperature-grown GaAs photomixers were used to construct a transmit-and-receive module that is frequency agile over the band 25 GHz to 2 THz, or 6.3 octaves. The photomixer transmitter emits the THz difference frequency of two detuned diode lasers. The photomixer receiver then linearly detects the THz wave by homodyne down conversion. The concept was demonstrated using microwave and quasioptical photomixers. Compared to time-domain photoconductive sampling, the photomixer transceiver offers improved frequency resolution, spectral brightness, system size, and cost.

Paper Details

Date Published: 29 April 1999
PDF: 7 pages
Proc. SPIE 3617, Terahertz Spectroscopy and Applications, (29 April 1999); doi: 10.1117/12.347116
Show Author Affiliations
Simon Verghese, MIT Lincoln Lab. (United States)
K. Alexander McIntosh, MIT Lincoln Lab. (United States)
Steve Calawa, MIT Lincoln Lab. (United States)
William F. DiNatale, MIT Lincoln Lab. (United States)
Erik K. Duerr, MIT Lincoln Lab. (United States)
L. H. Mahoney, MIT Lincoln Lab. (United States)

Published in SPIE Proceedings Vol. 3617:
Terahertz Spectroscopy and Applications
Mark S. Sherwin, Editor(s)

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