Generation and detection of THz waves with photomixers

Simon Verghese; K. Alexander McIntosh; Erik K. Duerr

doi:10.1117/12.361024

9 September 1999 Generation and detection of THz waves with photomixers

Simon Verghese, K. Alexander McIntosh, Erik K. Duerr

Proceedings Volume 3828, Terahertz Spectroscopy and Applications II; (1999) https://doi.org/10.1117/12.361024
Event: Industrial Lasers and Inspection (EUROPTO Series), 1999, Munich, Germany

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.

Citation Download Citation

Simon Verghese, K. Alexander McIntosh, and Erik K. Duerr "Generation and detection of THz waves with photomixers", Proc. SPIE 3828, Terahertz Spectroscopy and Applications II, (9 September 1999); https://doi.org/10.1117/12.361024

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