Referring to problem 8.16, what would the NEP be if the detector is now feeding an amplifier with a noise temperature of \(600 \mathrm{~K}\) ?

The Noise Figure \(F_{\text {rf }}\) is related to its noise temperature \(T_{\text {amp }}\) :

problem 8.16

A photomultiplier (PMT) has a dark count noise level of 100 counts per seconds. Calculate the minimum optical power \((S N R=1)\) at \(500 \mathrm{~nm}\) that can be detected within a \(10 \mathrm{~s}\) integration time. Assume a quantum efficiency of 0.2 at \(500 \mathrm{~nm}\).

Transcribed Image Text:

1+ Fif = 1 + Tamp To