OPTICAL SPECTROSCOPY OF INGAAS GAAS V-SHAPED QUANTUM WIRES/

We have investigated the multisubband recombination of V-shaped InGaAs /GaAs quantum wires as a function of the excitation density under stat ionary and transient conditions. The experimental results compare well with theoretical calculations of the quantized states, taking into ac count the effect of the nontetragonal strain and of the internal piezo electric field. The changes of the optical properties of the quantum w ires induced by external magnetic and electric fields are measured to elucidate the basic mechanisms of recombination. (C) 1996 Optical Soci ety of America.