Highly nondegenerate four-wave mixing in semiconductor laser amplifiers

摘要

Abstract: We present theory and experiments of four-wave mixing in bulk-semiconductor amplifiers. The theory includes bimolecular and auger recombinations. We show experimentally conversion efficiency larger than unit up to 2 THz frequency shift. We measure a signal-to- background ratio compatible with that required by practical applications as frequency converters. The high efficiency of the four-wave mixing process permits the investigation of the carrier dynamics down to an equivalent time resolution of the order of few tens of femtoseconds. !18