Experimental observation of the ground-state biexciton transition in CdSxSe1-x quantum dots in glass is presented in a three-beam experiment, involving a probe, a pump, and a saturating laser pulse. The observed quantum-dot biexciton ground state has a strongly enhanced binding energy compared to the bulk as theoretically predicted. The biexciton binding energy is measured as a function of quantum-dot size and the results are compared with calculations.
ASJC Scopus subject areas
- Condensed Matter Physics