OPTICAL RADIATION - COUNTERPART OF HIGH MAGNETIC-FIELDS

High magnetic fields provide an excellent tool to tune the energy levels of charge carriers. Any probe energy with a fixed value can be used to investigate the level system in question. Along with internal energies of the system, electromagnetic radiation proves to be an ideal probe. In this way magneto-optics has dominated due to its efficiency in the study of energy-band structures in solids. Selected examples for the investigation of semimagnetic semiconductors and magnetic materials covering a wide range of radiation energies and magnetic fields demonstrate the operation of magneto-optics in relation to other magneto-spectroscopic methods.