Patent ID: 8487234

Claim:
An electric device configured and operable at least as a transmitter of signals in a THz-range frequency, the device comprising: an electrodes' arrangement comprising at least a photocathode electrode layer and an associated anode electrode layer arranged in planes with a small gap between them, the photocathode layer being located on a heat distributing substrate made of diamond or sapphire, one electrode of the electrodes' arrangement serving for supplying an input signal, and another electrode of the electrodes' arrangement serving for reading therefrom an output electrical signal corresponding to a photocurrent through the device created by electrons' emission from the photocathode electrode in response to illumination of a predetermined wavelength range; and an antenna circuit electrically connected to said electrode at which the output electrical signal is read and being operable by an electric signal induced by said photocurrent for receiving and transmitting radiation with THz-range frequency.