Two-channel scattering and emission of electron in a quasi-one-dimensional quantum hole

It is shown that electron currents in heterostructures can be a source of photon emission in the far infrared. Two-channel electron scattering on δ-potential (point defect) is considered, and it is shown that the scattering takes place mainly on the second channel having the same amplitudes of transmission and reflection. It is shown that the interaction of scattering electrons with an external electromagnetic wave occurs a transition of electron from the second channel to the first channel with the photons emission. The probability of photon emission during a unit of time for two special cases of the external wave propagation is found. Range of emission frequencies is estimated, and it is shown that the electron moving in a heterostructure emits a photon with a frequency about 10¹3 Hz