Noun
English Wikipedia has an article on:Specific detectivityWikipedia
detectivity (plural detectivities)
The (relative) effectiveness of a detector
Now, the detectivity is simply the noise-equivalent power normalized to the bandwidth and detector area. Source: Internet
There is also the specific detectivity ( ) which is the detectivity multiplied by the square root of the area ( ) of the photodetector, ( ) for a 1 Hz bandwidth. Source: Internet