Anisotropic emission of interface fluctuation quantum dots

A. Thränhardt, C. Ell, G. Khitrova, H. M. Gibbs

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

We calculate energy levels, dipole moments and radiative broadening of interface fluctuation quantum dots. For optically allowed states, the dipole moment grows proportionally to the lateral quantum dot radius while the radiative broadening saturates towards the quantum well radiative broadening for large lateral quantum dot radii. This is accompanied by a change in the angular emission pattern, concentrating emission in forward and backward direction. Optically forbidden states do not couple to light propagating in the growth direction yet they may have a considerable radiative broadening due to spontaneous emission in other directions.

Original languageEnglish (US)
Pages (from-to)571-576
Number of pages6
JournalEuropean Physical Journal B
Volume27
Issue number4
DOIs
StatePublished - Jun 2 2002

Keywords

  • 78.60.-b Other luminescence and radiative recombination
  • 78.67.Hc Quantum dots
  • 78.70.-g Interactions of particles and radiation with matter

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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