V.F.Kosorotov
Received March 10, 1998
Radically new methods have been proposed to suppress parasitic
signals caused by acoustic or vibrational influences on the sensor
of a pyroelectric radiation receiver (PRR). To this end, the main
mechanisms causing the crystal polarization in a wide spectral range
have been studied. The crystal lattice properties prohibiting the
longitudinal piezoelectric effect along certain crystallographic directions
are used to suppress the configurational component of the polarization.
To eliminate the pyroacoustic component, application of dielectric
coatings or evacuation have been proposed. The methods proposed make
it possible to extend considerably the application range of PRR.