[Koji, Nathan, Duo, Shalika]
The dark noise of the Sb3513_A2 photodiode was observed using an SRS785 spectrum analyzer. Different bias voltages were provided to understand the dependency of dark noise on the bias voltage. It was observed that as the bias voltage deeps on decreasing the dark noise decrease too. A transimpedance amplifier with a gain of 5k was used to convert photocurrent into voltage. A Sallen key low pass filter was used in order to provide a low noise bias.
** Since the gain of the TIA was 5k so the output voltage noise was divided by 5k in order to get dark current noise.
Attachment 1: Dark current noise across Sb3513_A2 500um
Attachment 2: Dark current noise across Sb3513_A2 750um
Attachment 3: Dark current noise across Sb3513_A2 1000um
Attachment 4: Dark Current across Sb3513_A2 500um, 750um, 1000um respectively
Attachment 5: zip file containing all data
[added (Nathan)] Attachment 6: Experiment setup.