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Room-temperature excitonic absorption in quantum wires

Yasushi Takahashi·Yuhei Hayamizu·Hirotake Itoh·Masahiro Yoshita·Hidefumi Akiyama·Loren N. Pfeiffer·Ken W. West
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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 $4.3\times10^{-3}$, width of 7.2 meV, and strong polarization anisotropy.

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Yasushi Takahashi, Yuhei Hayamizu, Hirotake Itoh, Masahiro Yoshita, Hidefumi Akiyama, Loren N. Pfeiffer, Ken W. West. 2005-06-17. Room-temperature excitonic absorption in quantum wires. https://doi.org/10.1063/1.2135872

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