Abstract
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.
- Received 31 August 2011
- Corrected 19 October 2011
DOI:https://doi.org/10.1103/PhysRevB.84.165317
©2011 American Physical Society
Corrections
19 October 2011