In this work, we study theoretically the mechanism of resonant tunneling in lower dimensional quantum structures. Our model involves a double-barrier potential along the transport direction of the carriers that are laterally confined by a finite cladding barrier, as shown in Fig. 1. In the case of strong lateral confinement, the lateral quantum number is conserved and the tunneling process can be considered as a single-channel process.

© 1991 Optical Society of America

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