Date Thesis Awarded
Honors Thesis -- Open Access
Bachelors of Science (BS)
This project demonstrates an optical method for measuring the strength and direction of a magnetic field using electromagnetically induced transparency (EIT) in rubidium vapor. In rubidium atoms, the Zeeman effect causes atomic states to shift when an external magnetic field is applied. The magnitude of these shifts, and consequently the strength of the magnetic field, can be measured by recording electromagnetically induced transparency resonances with tuned laser fields. Furthermore, since the atom's interaction with the laser field is dependent on the direction of the magnetic field and the laser polarization, we are able to determine the direction as well as the strength of the magnetic field by analyzing relative intensities of EIT resonances. With a feasible precision down to 10 picoTesla and the possibility of complete field mapping, this magnetometer can be useful for medical, geophysical, and materials testing applications.
Cox, Kevin, "Vector Magnetometer Using Rb Vapor" (2011). Undergraduate Honors Theses. William & Mary. Paper 358.
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