Optical Pumping

Optical pumping is a process where light (photons) is used to manipulate the magnetic states of atoms or molecules. When specific light is shined on these particles, it causes electrons within them to jump between energy levels, altering their magnetic orientation. By carefully choosing the light's properties, scientists can align many atoms in the same magnetic state, creating a more ordered system. This technique is essential in applications like creating highly sensitive sensors, magnetic resonance imaging (MRI), and atomic clocks, where controlling atomic states with light enhances precision and functionality.