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.
Cite
@article{arxiv.cond-mat/0505501,
title = {Room-temperature excitonic absorption in quantum wires},
author = {Yasushi Takahashi and Yuhei Hayamizu and Hirotake Itoh and Masahiro Yoshita and Hidefumi Akiyama and Loren N. Pfeiffer and Ken W. West},
journal= {arXiv preprint arXiv:cond-mat/0505501},
year = {2009}
}