Electro-optical properties of excitons in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Cu</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:mi mathvariant="normal">O</mml:mi></mml:mrow></mml:math> quantum wells. I. Discrete states

Nonlinear optical spectroscopy of indirect excitons in coupled quantum wells

P. Andreakou,1 S. Cronenberger,1 D. Scalbert,1 A. Nalitov,2 N. A. Gippius,2,3 A. V. Kavokin,4,5,6 M. Nawrocki,7 J. R. Leonard,8 L. V. Butov,8 K. L. Campman,9 A. C. Gossard,9 and M. Vladimirova1 1Laboratoire Charles Coulomb, UMR 5221 CNRS/ Université de Montpellier, F-34095 Montpellier, France 2Institut Pascal, PHOTON-N2, Université Blaise Pascal, CNRS, 24 avenue des Landais, 63177 Aubière Cedex...

Scattering of Hot Excitons in Quantum Wells

The scattering probabilities of hot excitons in narrow quantum wells (QWs) are obtained. The exciton-phonon matrix element is considered by using an envelope function Hamiltonian approach in the strong quantization limit where the QW width is smaller than the exciton bulk Bohr radius. The Fröhlich-like interaction is taken into account and the contribution of the confined and interface modes to...

Zn(S, Se)-based quantum wells : band offsets, excitons and optical properties

The Wannier exciton properties in a single quantum well (SQW) of Zn(S,Se)/ZnS strained materials are reproduced by an accurate variational envelope function. A systematic study of binding energy and oscillator strength is performed as a function of well thicknesses and strain parameter values. Optical response and second harmonic generation effects (SHG) in asymmetric single quantum wells (ASQW...

Electro-absorptive properties of interdiffused InGaAsP/InP quantum wells

Optical properties of excitons in GaAs quantum wires

We report the result of a detailed spectroscopic investigation of the optical properties of excitons in rectangular (etched) and V-shaped (grown on non-planar substrates) GaAs quantum wires. High index excitonic transitions and strong polarization anisotropy of the optical spectra have been observed. The experimentally observed trasitions are in agreement with the theoretical evaluation of quan...