Abstract
Antenna-coupled point contact n-Ge/tungsten Schottky diodes have been used to detect CO2 laser radiation, and a very clear antenna pattern is obtained for an electric field polarized in the plane of incidence. The polarity of the detected voltage of the diode at low frequency and CO2 laser frequency regions indicates that the nonlinear I-V characteristic of the diode at low frequency persists up to the CO2 laser frequency.
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