Figure 7.
(a) Integrated intensity as function of current density for a 19-µm microdisk laser. Inset: evolution of emission spectrum near the threshold; (b) lowest threshold current density of our microdisk lasers on silicon against diameter (solid and open circles: monolithic and hybrid integration, respectively) in comparison with published results on monolithic GaAs-based QD microdisk/microring lasers on Si.
