INTRABAND TRANSITIONS IN MAGNETOEXCITONS IN COUPLED DOUBLE-QUANTUM WELLS

A theory of far-infrared (FIR) magneto-optical intraband s-->p(+/-) tr ansitions of direct and indirect excitons in semiconductor coupled dou ble quantum wells has been developed. The case of symmetric strained I nxGa1-xAs/GaAs quantum wells with nondegenerate valence band in the re gime of both narrow and wide barriers has been analyzed. The energies and dipole matrix elements of transitions between the ground s and exc ited p(+/-) states in a quantizing magnetic field B>2 T and electric f ield E perpendicular to the quantum well plane have been studied. The regimes of direct tin a weak electric field) and indirect tin a strong electric field) transitions, and the transition between the direct an d indirect regimes, have been investigated. (C) 1998 American Institut e of Physics.