Measurement of Photo-current

This lecture covers the measurement of a single photo-current, the absorption coefficient as a function of wavelength, intrinsic properties of materials, and the extraction of incident photon flux and wavelength from photo-current measurements. It also discusses the generation of free electrons in GaAs by incident photons, the demonstration of absorption of photon flux using Beer-Lambert's law, and the determination of unknown parameters using two independent photo-current measurements.