Mechanism crossover of terahertz radiation from InAs surface induced by a magnetic field at high density excitation

摘要

The excitation-density dependences of the terahertz radiation power and waveform from InAs surface under magnetic field of 2 T were investigated. At high density excitation, the drastic changes were observed and it is explained by the crossover of the radiation mechanism of the magnetic field induced component of the THz radiation.