Madeline Horn edited textit_Shot_Noise_To_perform__.tex  over 8 years ago

Commit id: 5ba72643c03cf1893b85c61ca33f089fc2dda134

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\textit{Shot Noise}  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 10K $10K$  ohm, a Gain (G1) of 100 $100$  through the preamp, we used a bandwidth of 100K $100K$  Hz which has an equivalent noise bandwidth of 115.303K $115.303K$  Hz, and we varied the voltage across the photo-diode from 0 $0$  to -120 mV. $-120 \textrm{ mV}$.  To avoid saturating the values of Vsq (read from the multimeter attached after the signal (Vsq) went through the filter, the gain, and the multiplier) we had to vary the gain (G2) from 5000, $5000$,  to 4000, $4000$,  and finally to 3000. $3000$.  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. Vsq is the signal that has been filtered.