Application Features of Pyroelectric Detector for THz Wave Receiving

Quasioptical THz wave receiver based on the widely accessible pyroelectric detector like PM-4 has been studied. The necessary components (modulator, receiver, preamplifier, synchronous detector, ADC module, and controller) are considered. The NEP of the pyroelectric detector was measured at 140GHz. Also, with the help of the Michelson interferometer, the wavelength measurements have been done. It is shown that the pyroelectric detector together with the mentioned components can be used to solve a number of problems in the THz frequency range, which do not require high sensitivity of the receiver.