Hot Hole p-Ge Lasers and Masers for Spectroscopy of MultiQuantum-Well Heterostructures Ge/Ge_1-xSi_x

Abstract

Hot hole p-Ge masers and lasers operating in millimiter and far IR ranges (up to 100 μm) belong to a new group of tunable semiconductor generators discovered in the early ’80s(1). They are proposed to be used in solid state spectroscopy since their discovery. These generators may be preferable to other sources of the same frequency since it is possible to set the sourcer of radiation near by the sample and provide ultralow background radiation conditions in low temperature experiments.The performance of the tunable spectrometer with hote hole p-Ge emitter is demostrated by its application to studies of cyclotron resonance in strained multi-quantum-well (MQW) heterostructures (HS) Ge/Ge_0.87Si_{0 13} and investigations of shallow impurities in these heterostructures.