FAR-INFRARED S-]P(+ -) INTEREXCITON TRANSITIONS IN INGAAS/GAAS COUPLED DOUBLE-QUANTUM WELLS/

We consider s-->p(+/-) interexciton far-infrared (FIR) magnetooptical transitions in coupled double quantum wells (DQWs). Spatially direct ( intrawell) and indirect (interwell) excitons in strained InxGa1-xAs/Ga As symmetric DQWs with a simple valence band are considered. The evolu tion of the transition energies and oscillator strengths as functions of the transverse magnetic field B in different regimes is studied: we consider the direct regime (zero and low transverse electric field E) , the indirect regime (high E), and the indirect-direct crossover (ind uced by increasing B at intermediate E). (C) 1996 American Institute o f Physics.