To perform the Shot Noise Experiment, we used the Noise Fundamentals devices and two digital multi-meters. Our settings for the Noise Fundamentals devices were as follows: we used the trans-impedance amplifier with a resistance of \(10 k \Omega\), a Gain (\(G1\)) of \(\times100\) through the preamp, we used a bandwidth of \(100\) KHz which has an equivalent noise bandwidth of \(115.303\) KHz, and we varied the voltage across the photo-diode from \(0\) to \(-120 \textrm{ mV}\).
To avoid saturating the values of Vsq (read from the multimeter attached after the signal (\(V_{sq}\)) went through the filter, the gain, and the multiplier) we had to vary the gain (\(G2\)) from \(\times5000\), to \(\times4000\), and finally to \(\times3000\). Our multiplier had a setting of AxA because we needed to square the signal. We recorded the Vsq values in Volts and we recorded the V across the photo-diode in mV. \(V_{sq}\) is the signal that has been filtered.
To obtain all of our voltage values for Shot Noise, we averaged 100 data points using the multi-meter. This reduced our error significantly.
Figures \ref{fig:ShotSchem} and \ref{fig:ShotSchem2} show the diagram for how to set up the Noise Fundaments for Shot Noise.