Why can a pyroelectric detector detect only modulated optical radiation?
Since the output signal voltage of the detector under constant optical radiation is zero, both pyroelectric detectors do not respond to unmodulated optical radiation.
Since the output signal voltage of the detector under constant optical radiation is zero, both pyroelectric detectors do not respond to unmodulated optical radiation.
Since the output signal voltage of the detector under constant optical radiation is zero, both pyroelectric detectors do not respond to unmodulated optical radiation.
