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Publications associées (74)

Semiconductor laser having a photonic bandgap material

Disclosed is a semiconductor laser that is constituted by at least one active layer sandwiched between two confinement layers with P and N type doping to constitute a PN junction. In at least one of the confinement layers and/or the active layer, holes are ...

1997

Role of hole localization in the optical singularities of a two-dimensional electron gas studied by time-resolved photoluminescence

Benoît Marie Joseph Deveaud

The coexistence of localized and free holes in modulation doped InGaAs/InP quantum wells, which show Fermi edge singularities in the cw photoluminescence and excitation spectra, has been determined by picosecond time-resolved luminescence spectroscopy. A l ...

1997

Variational Calculation of Fano Linewidth - Application to Excitons in Quantum-Wells

Alfredo Pasquarello

A procedure for calculating the resonance width of a state degenerate with a continuum is proposed. It is based on a diagonalization of the Hamiltonian on a finite variational basis followed by application of the Fano theory on the resulting eigenstates. T ...

1991

Binding energies of ground and excited states of shallow acceptors in GaAs/Ga1-xAlxAs quantum wells

Alfredo Pasquarello

We calculate binding energies of shallow acceptors in GaAs/Ga1-xAlxAs quantum wells (QWs) for varying well widths. Variational calculations are performed in the framework of a multiband effective-mass theory, which accounts for the mixing between heavy and ...

1990

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