Room-temperature excitonic absorption in quantum wires

Yasushi Takahashi, Yuhei Hayamizu, Hirotake Itoh, Masahiro Yoshita, Hidefumi Akiyama, Loren N. Pfeiffer, Ken W. West

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


We measured the absorption spectra of T-shaped quantum wires at room temperature using waveguide-transmission spectroscopy. A strong and narrow room-temperature one-dimensional-exciton absorption peak was observed, which indicates a peak modal absorption coefficient of 160 cm-1 per 20 wires with a Γ -factor of 4.3× 10-3, a width of 7.2 meV, and strong polarization anisotropy.

Original languageEnglish (US)
Article number223119
Pages (from-to)1-3
Number of pages3
JournalApplied Physics Letters
Issue number22
StatePublished - 2005
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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