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Calculated absorption and photoluminescence spectra for quantum wires grown in a 'V' groove

The growth of quantum wires within a 'V' groove etched in a substrate is a recognized method of fabricating an active region confined in two dimensions for use in optoelectronic devices. The authors have approximated the 'crescent shaped' wire obtained using such a process by a rectangular cross section and have calculated the absorption and photoluminescence spectra of such a structure. They have used a GaAs-Al0.35Ga0.65As quantum wire of typical dimensions 100*(150-250)AA for their calculations and have included dimensional fluctuations. By varying the size of the largest confinement direction between 150 and 250 AA, the authors have determined that the differences in the absorption and photoluminescence spectra at different light polarizations are such that they can use these techniques to monitor the wire's dimensions.