Abstract
The nonlinear electrical response from a low temperature grown GaAs photomixer driven with the optical beat of two continuous-wave lasers allows frequency mixing between radiofrequency and THz-waves. Phase-sensitive demodulation of the signal from a modulated THz-wave is theoretically and experimentally demonstrated using a photomixer electrically driven with an alternative voltage at the modulation frequency.
Highlights
The Terahertz photonics research has applications in various domains including biological imaging, remote sensing, high-speed telecommunications, and security screening [1]
The nonlinear electrical response from a low temperature grown GaAs photomixer driven with the optical beat of two continuous-wave lasers allows frequency mixing between radiofrequency and THzwaves
The nonlinear electrical conduction in a low temperature grown GaAs (LTGGaAs) photomixer was exploited for direct current modulation of the photomixing signal [4]
Summary
The Terahertz photonics research has applications in various domains including biological imaging, remote sensing, high-speed telecommunications, and security screening [1]. The nonlinear electrical response from a low temperature grown GaAs photomixer driven with the optical beat of two continuous-wave lasers allows frequency mixing between radiofrequency and THzwaves. Phase-sensitive demodulation of the signal from a modulated THz-wave is theoretically and experimentally demonstrated using a photomixer electrically driven with an alternative voltage at the modulation frequency.
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