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arxiv: cond-mat/0505501 · v3 · submitted 2005-05-20 · ❄️ cond-mat.mes-hall

Room-temperature excitonic absorption in quantum wires

Yasushi Takahashi , Yuhei Hayamizu , Hirotake Itoh , Masahiro Yoshita , Hidefumi Akiyama , Loren N. Pfeiffer , Ken W. West This is my paper
classification ❄️ cond-mat.mes-hall
keywords absorptionwirespeakquantumroom-temperaturestronganisotropycoefficient
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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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