Title : Imaging of emission patterns in a T-shaped quantum wire laser

Applied Physics Letters, 83, 4089 (2003)

abstruct : Spatially and spectrally resolved microscopic images of spontaneous and stimulated emissions are imaged at the mirror facets of a GaAs T-shaped quantum wire laser with high uniformity. Laser emission from the one-dimensional ground state reveals a circular image located at the core of a T-shaped optical waveguide but significantly smaller in area than the low power spontaneous emission from the same waveguide. These images unambiguously allow assignment of all spontaneous and laser emissions to the wire ground state and respective intersecting wells in the structure.

Title : Strong photo-absorption by a single quantum wire in waveguide-transmission spectroscopy

Applied Physics Letters 86, 243101 (2005)

abstruct : We measured the absorption spectrum of a single T-shaped, 14x6 nm lateral-sized quantum wire embedded in an optical waveguide using waveguide-transmission spectroscopy at 5 K. In spite of its small volume, the one-dimensional-exciton ground state shows a large absorption coefficient of 80 /cm, or a 98 % absorption probability for a single pass of the 500-um-long waveguide.

Title : Room-temperature excitonic absorption in quantum wires

Applied Physics Letters 87, 223119 (2005)