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29 April 1999 Photomixer transceiver
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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.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Simon Verghese, K. Alexander McIntosh, Steve Calawa, William F. DiNatale, Erik K. Duerr, and L. H. Mahoney "Photomixer transceiver", Proc. SPIE 3617, Terahertz Spectroscopy and Applications, (29 April 1999); https://doi.org/10.1117/12.347116
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