Wavelength tuning in compact microdisks with InGaAs quantum dots in a well structure

The tunability in lasing wavelength of the In
_0.65
Ga
_0.35
As quantum dots-in-a-well microdisk lasers was observed from λ=1190 to 1270 nm by varying the diameter of microdisk cavities from 1.70 μm to 1.83 μm. The magnitude of continuous tuning range is about 80 nm.