FREQUENCY-TUNED FAR-INFRARED AND TERAHERTZ COHERENT SOURCE ON SEMICONDUCTOR NANOHETEROSTRUCTURE

摘要

FIELD: physics.;SUBSTANCE: frequency-tuned terahertz and far-infrared coherent source is based on a semiconductor nanoheterostructure and is excited by middle infrared band pulses. Between the source of exciting pulses and the semiconductor nanoheterostructure there is a filter in form of a plate with periodically alternating transparent and opaque strips to achieve spatial periodicity of polarisation, which is excited in the active region of the semiconductor nanoheterostructure.;EFFECT: high radiation power.;3 dwg