Nowadays it is common to encode information using magnetic micro structures (magnetic stripes). The work at hand deals with a possibility for the quantitative measurement of the magnetic properties of such structures. For this task a Faraday magnetometer was designed and constructed. For the measurement a magneto-optical sensor from the company Matesy was used. The most important components of the magnetometer were characterized in order to evaluate the setup's limits in temporal, spatial, and amplitude resolution. The designed setup is visible in Figure 1.

The characterization focused on the light-source, the camera, the polarizers, and the Faraday crystal.