https://doi.org/10.1140/epjb/e2002-00191-0
Anisotropic emission of interface fluctuation quantum dots
1
Optical Sciences Center, University of Arizona,
Tucson, Arizona 85721-0094, USA
2
Experimentelle Physik IIa, Universität Dortmund, Otto-Hahn-Str. 4, 44221
Dortmund, Germany
Corresponding author: a angelat@optics.arizona.edu
Received:
20
March
2002
Published online:
25
June
2002
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.
PACS: 78.67.Hc – Quantum dots / 78.60.-b – Other luminescence and radiative recombination / 78.70.-g – Interactions of particles and radiation with matter
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2002
