Indirect interband optical transitions in a semiconductor quantum ring with submicrometer dimensions

O. Vänskä, M. Kira, I. Tittonen, Stephan W Koch

Research output: Contribution to journalArticle

3 Scopus citations


It is shown that the optical absorption spectra of submicrometer-size semiconductor quantum rings strongly change with the incidence angle of the exciting light. Besides the usual direct optical transitions, additional indirect transitions occur for fields with the wave-vector components perpendicular to the symmetry axis of the ring. These indirect transitions are a consequence of the various orbital angular momentum modes of light that become accessible when appropriate quantum rings are used.

Original languageEnglish (US)
Article number165317
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number16
Publication statusPublished - Oct 12 2011
Externally publishedYes


ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

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