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(a) size atomic force microscopy (AFM) image and (b) AFM profile of uncapped quantum wire (QWR) grown on top of a short period superlattice. QWR are oriented along the [1–10] direction and have height and pitch period.
Laser characteristics (optical output vs injection current). The inset shows the lasing spectrum from a long and wide laser diode, with three stacked layers of quantum wires in the active region.
Electroluminiscence spectra of three stacked layers of QWR laser, with cavity length for injection currents of 35, 90, 200, 390, 540, 640, 820, 960, and at . Above lasing emission is observed at .
Threshold current density vs of two laser devices containing a single layer and three stacked layers of quantum wires in the active region. Laser devices with cavity lengths of 1, 2, and are shown.
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