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Proceedings Paper

Generation and detection of THz waves with photomixers
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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. A photomixer transmitter emits the THz difference frequency of two detuned diode lasers. A photomixer receiver then linearly detects the THz wave by homodyne down conversion. The concept was demonstrated using microwave and submillimeter-wave photomixers. Compared to time-domain photoconductive sampling, the photomixer transceiver offers improved frequency resolution, spectral brightness, system size, and cost.

Paper Details

Date Published: 9 September 1999
PDF: 7 pages
Proc. SPIE 3828, Terahertz Spectroscopy and Applications II, (9 September 1999); doi: 10.1117/12.361024
Show Author Affiliations
Simon Verghese, MIT Lincoln Lab. (United States)
K. Alexander McIntosh, MIT Lincoln Lab. (United States)
Erik K. Duerr, MIT Lincoln Lab. (United States)

Published in SPIE Proceedings Vol. 3828:
Terahertz Spectroscopy and Applications II
J. Martyn Chamberlain, Editor(s)

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