Consequences of self-induced transparency in semiconductors

Some aspects of self-induced transparency in dispersive systems are studied. In particular we analyze the intensity-dependent reflectivity of a crystal of doped narrow-band-gap semiconductor and find a rather drastic alteration of the reflectivity curve with increased intensity. A numerical investigation is made of pulse propagation across the surface of a slab of semiconductor at frequencies below the ambient plasma frequency. We find that the slab attains transparency at elevated field strengths. Finally, a study of continuous-wave propagation is made.