Quantitative absorption spectra of quantum wires measured by analysis of attenuated internal emissions

Masahiro Yoshita, Takayuki Okada, Hidefumi Akiyama, Makoto Okano, Toshiyuki Ihara, Loren N. Pfeiffer, Ken W. West

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

An absorption-spectroscopy method that utilizes internal emissions as the source of the probe light was used to measure the absorption spectra of quasi-one-dimensional (q-1D) excitons in T-shaped quantum wires embedded in an optical waveguide. The modal absorption area of the 1D ground-state excitons was estimated to be 0.39 eV cm -1 and was almost independent of temperature in the range 4-150 K. Quantitative evaluation using the absorption spectra revealed that the absorption cross-section per unit length at resonance peak and the spectrally integrated absorption cross-section area per unit length of the 1D ground-state excitons were 1.0 nm and 2.5×10 -3eV nm, respectively.

Original languageEnglish
Article number112101
JournalApplied Physics Letters
Volume100
Issue number11
DOIs
Publication statusPublished - 2012 Mar 12
Externally publishedYes

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quantum wires
excitons
absorption spectra
absorption cross sections
ground state
light beams
optical waveguides
absorption spectroscopy
evaluation
temperature

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Quantitative absorption spectra of quantum wires measured by analysis of attenuated internal emissions. / Yoshita, Masahiro; Okada, Takayuki; Akiyama, Hidefumi; Okano, Makoto; Ihara, Toshiyuki; Pfeiffer, Loren N.; West, Ken W.

In: Applied Physics Letters, Vol. 100, No. 11, 112101, 12.03.2012.

Research output: Contribution to journalArticle

Yoshita, Masahiro ; Okada, Takayuki ; Akiyama, Hidefumi ; Okano, Makoto ; Ihara, Toshiyuki ; Pfeiffer, Loren N. ; West, Ken W. / Quantitative absorption spectra of quantum wires measured by analysis of attenuated internal emissions. In: Applied Physics Letters. 2012 ; Vol. 100, No. 11.
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