Sensor system for detecting a medium

Abstract

A magnetic field sensor for detecting a magnetic field. The sensor includes a magneto-optical material, an excitation light source configured to emit excitation radiation for exciting electronic states of the magneto-optical material, a microwave source configured to generate an electromagnetic field for feeding a resonator structure, a detector configured to detect fluorescent radiation that the magneto-optical material may emit as a result of irradiation with the excitation radiation, a magnetic field generating apparatus arranged and configured to generate a permanent magnetic field in the region of the magneto-optical material, a resonator structure, arranged on a dielectric, configured to shape the electromagnetic field emitted by the microwave source in such a way that a microwave field is created that is suitable for manipulating spin states of the magneto-optical material. The magneto-optical material, the excitation light source, the detector, and the microwave structure are arranged in an enclosed space.

Dependencies are inferred from the claim text.