Room-temperature excitonic absorption in quantum wires

Details Room-temperature excitonic absorption in quantum wires Room-temperature excitonic absorption in quantum wires

2005-05-20

arxiv.org/abs/cond-mat/0505501v3

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

3pages, 3figure, 1table

Scientific paper

10.1063/1.2135872

We measured absorption spectra of T-shaped quantum wires at room temperature
using waveguide-transmission spectroscopy. Strong and narrow room-temperature
one-dimensional-exciton absorption peak was observed, which shows peak modal
absorption coefficient of 160 cm$^{-1}$ per 20 wires with $\Gamma$-factor of
$4.3\times10^{-3}$, width of 7.2 meV, and strong polarization anisotropy.

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