Emission of terahertz-frequency electromagnetic radiation from indium phosphide under excitation by short pulses of near-infrared radiation

Abstract

Abstract-We have examined the emission of terahertzfrequency radiation from Indium Phosphide (InP) under ultrashort pulses of near-infrared radiation.We have investigated nominally undoped, as well as p-doped and n-doped material. Compared to the emitter Indium Arsenide (InAs) we find that the total THz field from undoped InP is an order of magnitude less, but with the strength shifted to higher frequencies.