chapter  6
50 Pages

Charge Transfer Devices

Modern photodetectors provide quantum efficiency, ηd, approaching

unity. However, for terrestrial applications, the only way to signifi-

cantly enhance the focal plane sensitivity without sacrificing reso-

lution is to increase the number of detectors used by the imaging

system. Presently, the number of detectors used in the imaging

systems is limited by the requirement to connect each detector to its

preamplifier. The charge transfer device, a semiconductor structure

where the discrete charge packets are removed, may eliminate these