Oscillations of electron–hole plasma in terahertz emitters
Keywords: optical excitation, plasma oscillations, GaAs, InAs
AbstractOscillations of photogenerated electron–hole plasma in freestanding terahertz emitters are studied using the hydrodynamic analysis and Monte Carlo simulations. The pronounced plasma oscillations are obtained in an n-GaAs emitter in which the oscillations are initiated by the surface electric field. The plasma oscillations are also found in an n-InAs emitter in which the oscillations are induced by the photo-Dember effect.