Abstract
We have observed third-harmonic generation associated with intraband transitions in semiconductor quantum dots. The frequency tripling occurs in the valence band of InAs/GaAs self-assembled quantum dots. We show that the third-harmonic generation is enhanced due to the achievement of the double resonance condition between intraband transitions. A third-order nonlinear susceptibility as large as is measured for one dot plane.
- Received 1 December 1998
DOI:https://doi.org/10.1103/PhysRevB.59.9830
©1999 American Physical Society