Figure 5.

a Micro-PL power series of a single type I GaAs QD from the sample of Fig. 4e with df = 0.57 nm. b Zoomed part of the spectra. The laser energy was 1.96 eV, and the excitation power Ie was varied from Ie8 up to 1,700 W/cm2. The red spectrum in (a) was measured using Ie = 450 W/cm2, which is equal to the conditions applied in Fig. 4

Heyn et al. Nanoscale Research Letters 2009 5:576-580   doi:10.1007/s11671-009-9507-3