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Terahertz Sources and Detectors
2012This chapter describes techniques and systems regarding terahertz sources and detectors, mainly reviewing basic concepts and principles to help understand THz imaging instruments. The terahertz technologies outlined in this chapter provide background knowledge to the experimental work on the identification and reconstruction of terahertz spectroscopic ...
Xiaoxia Yin +2 more
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Terahertz sources and detectors
SPIE Proceedings, 2005Through the support of the US Army Research Office we are developing terahertz sources and detectors suitable for use in the spectroscopy of chemical and biological materials as well as for use in imaging systems to detect concealed weapons. Our technology relies on nonlinear diodes to translate the functionality achieved at microwave frequencies to ...
Thomas W. Crowe +5 more
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Design guidelines for terahertz mixers and detectors
IEEE Transactions on Microwave Theory and Techniques, 2005Twin-slot antennas and coplanar waveguides are a popular choice for coupling signals to state-of-the-art mixers and detectors at terahertz frequencies. Although these sensors show promising performance in terms of noise temperature, they usually also show a considerable downward shift in the center frequency of their spectral response, especially when ...
Focardi, P., McGrath, W.R., Neto, A.
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Solid State Rectifier as Terahertz Detector
2018 AEIT International Annual Conference, 2018We present a new solid state rectifier, compatible with CMOS integrated circuit, suitable to direct conversion of terahertz radiation, at room temperature. The structure creates a rectenna, consists in a truncated conical helix extruded from a planar spiral and connected to a nanometric metallic whisker at one of its edges. The whisker reaches the gate
Massaioli S., Rao R., Palma F.
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SILICON FINFETS AS DETECTORS OF TERAHERTZ AND SUB-TERAHERTZ RADIATION
International Journal of High Speed Electronics and Systems, 2011We report on terahertz detection (from 0.2 THz to 2.4 THz) by Si FinFETs of different widths (with 2, 20, and 200 fins connected in parallel). FinFETs (with a small number of fins and with feature sizes as short as 20 nm to 40 nm) showed a very high responsivity (far above that previously measured for standard CMOS).
W. STILLMAN +9 more
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An HTS detector for terahertz imaging
SPIE Proceedings, 2008ABSTRACT This paper describes the design, implementation and measurements of a detector for imaging purposes at terahertz frequencies. The detector comprises of a ring slot antenna coupled to a high temperature superconducting Josephson Junction device. The detector was shown to respond to an incident field at 0.6 THz. An imaging system was constructed
Andrew D. Hellicar +3 more
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A review of terahertz detectors
Journal of Physics D: Applied Physics, 2019Physics is the interplay of energy and matter. Energy, in the form of light, interacting with matter, principally in the solid state, underpins this topical review. The subject is developed carefully and methodically, beginning with basic definitions pertaining to terahertz detectors and terahertz radiation, then proceeding systematically to delineate ...
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Plasmonic terahertz detectors/spectrometers
35th International Conference on Infrared, Millimeter, and Terahertz Waves, 2010A miniature high speed tera- and gigahertz electromagnetic radiation detector/spectrometer has been created. The operation principle is based on the excitation of distinct sets of plasma modes in the two-dimensional electron system (2DES) of semiconductor AlGaAs/GaAs heterostructure with embedded nonlinear defect.
V. Muravev, I. Kukushkin
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Superconducting detectors for terahertz imaging
2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2015Superconducting niobium nitride (NbN) hot electron bolometer (HEB) detectors consist of a complementary logarithmic-spiral antenna made of gold and an NbN film (bridge) connecting across the antenna's inner terminals have been fabricated and characterized.
S. L. Jiang +6 more
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Metamaterial-based Terahertz Detectors
Advanced Photonics 2013, 2013We present recent work utilizing terahertz field enhancement in metamaterial structures to drive carrier generation in semiconductors. We implement this as a novel platform to detect terahertz radiation which is a purely electronic effect.
Harold Y. Hwang +5 more
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