Optical magnetometry is a technique used to measure magnetic fields with high precision by utilizing light. It often involves the interaction of light with atoms or molecules that are sensitive to magnetic fields. This method can detect very weak magnetic fields, making it useful in various applications, including biomedical imaging and materials science. One common approach in optical magnetometry is the use of laser light to probe the energy levels of atoms like rubidium or cesium. Changes in the light's properties, such as its polarization or intensity, can indicate the strength and direction of the magnetic field, allowing for detailed analysis of magnetic environments.