THz Scanner Based on Planar Antenna-Supplied Silicon Field-Effect Transistors

D. Yavorskiy, J. Marczewski, K. Kucharski, P. Kopyt, W. Gwarek, M. Ratajczyk, W. Knap, B. Piętka, J. Łusakowski


A scanning device for imaging at THz frequencies was designed and constructed. The device comprised a 335~GHz source of radiation, an x-y-z translation stages, a number of optical elements and a detector. The detector was a silicon field-effect transistor supplied with a resonant antenna and a low-noise preamplifier. With a detector response of 10~V/W and a source power of 10~mW we could generate images in a DC mode with a speed limited only by the velocity of the stages movement.

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Photonics Letters of Poland - A Publication of the Photonics Society of Poland
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ISSN: 2080-2242