We report a disk laser using two quantum-dot semiconductor gain elements, resulting in what we believe is the first demonstration of intracavity frequency conversion with these active media. Output power of $6\mathrm{W}$ has been obtained in dual-gain configuration at a wavelength of $1180\mathrm{nm}$ , while single-gain lasers produced up to 3 and $4\mathrm{W}$ individually, limited by thermal rollover in the output characteristics. The gain enhancement achieved with two active elements comprising 39 layers of Stranski–Krastanov InGaAs quantum dots allows for intracavity frequency doubling delivering $2.5\mathrm{W}$ of orange radiation.