Franz-Keldysh effect on Landau levels and magnetoexcitons in quantum wells

We consider the optical properties associated with the photoexcitation and radiative recombination of electron-hole pairs and excitons in intrinsic quantum wells in an unusual high-field regime, namely, in the presence of a strong dc electric field in the quantum-well plane and a crossed static magnetic field aligned with the growth direction. We find Landau-level-like oscillatory structure in the optical density well below the lowest Landau level or magnetoexciton when the electric field is present.