Electrically-driven heterodyne detection of a multifrequency THz-wave with a photomixer

F. L. Constantin

doi:10.1117/12.2591979

5 March 2021 Electrically-driven heterodyne detection of a multifrequency THz-wave with a photomixer

F. L. Constantin

Proceedings Volume 11685, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XIV; 116851I (2021) https://doi.org/10.1117/12.2591979
Event: SPIE OPTO, 2021, Online Only

Abstract

The spectral components of a multifrequency THz-wave may be characterized using the nonlinear electrical response of a low temperature grown GaAs photomixer. The heterodyne detection with the photomixer is exploited to down-convert a radiofrequency-modulated THz-wave to the microwave domain, by using a suitably tuned optical beat that acts as local oscillator. The photomixer is electrically driven with an alternative voltage oscillating at the modulation frequency and provides a phase-sensitive DC response signal indicating the demodulation of the THz-wave.

Conference Presentation

Citation Download Citation

F. L. Constantin "Electrically-driven heterodyne detection of a multifrequency THz-wave with a photomixer", Proc. SPIE 11685, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XIV, 116851I (5 March 2021); https://doi.org/10.1117/12.2591979

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