Abstract
Oscillations 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.
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