TeraFETs spectrometer

Xueqing Liu; Trond Ytterdal; Michael S. Shur

doi:10.1117/12.3012890

7 June 2024 TeraFETs spectrometer

Xueqing Liu, Trond Ytterdal, Michael S. Shur

Author Affiliations +

Proceedings Volume 13026, Next-Generation Spectroscopic Technologies XVI; 1302603 (2024) https://doi.org/10.1117/12.3012890
Event: SPIE Defense + Commercial Sensing, 2024, National Harbor, Maryland, United States

Abstract

For decades, TeraFETs have been used as THz and sub-THz detectors competing with commercial Schottky diode-based technology. More recently, short channel TeraFETs have been explored for THz vector detection measuring both the intensity and phase of the impinging THz or sub-THz radiation. We report on using TeraFETs as spectrometers, lineof- sight detectors, and frequency-to-digital converters. These applications use a single TeraFET excited at the gate-to-source and drain-to-source inputs, current-driven TeraFETs, or traveling wave multistage TeraFET amplifiers. Feeding the phase-shifted THz signals into the gate and source terminals of multistage TeraFET amplifiers greatly improves the response of the TeraFET spectrometer and enables the implementation of the frequency-to-digital converter using TeraFETs.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Xueqing Liu, Trond Ytterdal, and Michael S. Shur "TeraFETs spectrometer", Proc. SPIE 13026, Next-Generation Spectroscopic Technologies XVI, 1302603 (7 June 2024); https://doi.org/10.1117/12.3012890

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