Room-temperature excitonic absorption in quantum wires
Yasushi Takahashi, Yuhei Hayamizu, Hirotake Itoh, Masahiro Yoshita, Hidefumi Akiyama, Loren N. Pfeiffer, Ken W. West
Abstract
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 Γ-factor of 4.3×10-3, width of 7.2 meV, and strong polarization anisotropy.
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