Abstract

A new method is suggested, in which millimeter- or submillimeter-wave images are converted to visible displays. This technique can be applied to either coherent or incoherent radiation, giving the same power response per unit area for either case.

The proposed device depends upon conductivity modulating a germanium panel by means of light or an electron beam in selected areas, and thereby controlling the transmission of millimeter-wave energy through the semiconductor medium. Laboratory tests are reported in which displays have been obtained from several configurations of point sources of millimeter-wave radiation.

© 1968 Optical Society of America

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