Microwave Faraday Rotation Using a Bimodal Cavity

A technique has been developed for using a bimodal cavity to measure Faraday rotation at microwave frequencies with high sensitivity. Such measurements yield information about the off-diagonal elements of either the susceptibility or conductivity tensor of the sample being investigated. This paper presents a qualitative discussion of the behavior and use of this cavity. Previously presented analysis of the cavity operation is outlined and the measurements made to date, using the cavity, are indicated.