15 October 2012 Frequency tunable electronic sources working at room temperature in the 1 to 3 THz band
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Abstract
Compact, room temperature terahertz sources are much needed in the 1 to 3 THz band for developing multi-pixel heterodyne receivers for astrophysics and planetary science or for building short-range high spatial resolution THz imaging systems able to see through low water content and non metallic materials, smoke or dust for a variety of applications ranging from the inspection of art artifacts to the detection of masked or concealed objects. All solid-sate electronic sources based on a W-band synthesizer followed by a high-power W-band amplifier and a cascade of Schottky diode based THz frequency multipliers are now capable of producing more than 1 mW at 0.9THz, 50 μW at 2 THz and 18 μW at 2.6 THz without the need of any cryogenic system. These sources are frequency agile and have a relative bandwidth of 10 to 15%, limited by the high power W-band amplifiers. The paper will present the latest developments of this technology and its perspective in terms of frequency range, bandwidth and power.
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Alain Maestrini, Imran Mehdi, José V. Siles, Robert Lin, Choonsup Lee, Goutam Chattopadhyay, John Pearson, Peter Siegel, "Frequency tunable electronic sources working at room temperature in the 1 to 3 THz band", Proc. SPIE 8496, Terahertz Emitters, Receivers, and Applications III, 84960F (15 October 2012); doi: 10.1117/12.929654; https://doi.org/10.1117/12.929654
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