Development of a Surface Magneto-Optic Kerr Effect Magnetometer

This thesis presents the development and optimization of a surface magneto-optic Kerr effect (SMOKE) magnetometer. Our magnetometer is explained in terms of its three major parts: mechanical setup, electrical connections, and LabVIEW programming. An upgrade of the electrical system is shown to double the available applied field. Studies of the deviation angle and incident polarization direction show an ideal deviation angle range of 10° to 16° from extinction and that the polarizer should be aligned completely along either the P or S polarization axis. The addition of more mirrors to the optical system gives greater choice of incident angle and allows optical components to be placed further from the magnet poles. This is shown to reduce laser intensity fluctuations caused by magnetic interference. Our data manipulation process is explained. Finally, a comparison between SMOKE and EHE hysteresis measurements suggests that our SMOKE apparatus is functioning properly.