Shot Noise


Shot noise is a type of electronic noise which originates from the discrete nature of electric charge. Shot noise in electronic circuits consists of random fluctuations in a DC current because current actually consists of a flow of discrete charges (electrons). With very small currents, particularly when measuring on short time scales (thus wider bandwidths), shot noise can be significant. The term also applies to photon counting in optical devices, where shot noise is associated with the particle nature of light (photons).

Experiment Guides

  • Notes
  • Pre-Lab
  • Guide
  • Power Spectra Tutorial
  • Related Material

  • MIT experiment
  • Photon Counting
  • Shot Noise History
  • GR1390B Noise Generator
  • SR5113 Bandpass amplifier
  • SR5184 Low Noise preamp
  • Agilent 34410a Manual
  • 1N914 diode
  • Burle 8575 PMT
  • Useful Links

  • Sources of Noise
  • Agilent 34401 Manual
  • PicoScope 4262 Manual
  • Power Spectra
  • Fourier analysis