| 摘 要： | Monte Carlo simulations of electron transport in AlxGa1−x
As/GaAs/InyGa1−y
As double-quantum-well heterostructures in high lateral electric fields are carried out. It is shown that, under the conditions
of intervalley Γ-L electron transfer, there exists a population inversion between the first and the second quantum-confinement subbands in the
Γ valley. The population inversion appears in the fields exceeding 4 and 5.5 kV/cm at 77 and 300 K, respectively. The gain
in a superlattice composed of such quantum wells is estimated to be on the order of 100 cm−1 for radiation with a wavelength of 12.6 μm.
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Translated from Fizika i Tekhnika Poluprovodnikov, Vol. 37, No. 2, 2003, pp. 224–229.
Original Russian Text Copyright ? 2003 by Aleshkin, Andronov, Dubinov.
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