Continuous room-temperature operation of microdisk laser diodes

InGaAs/GaAs/AlGaAs multiquantum well microdisk laser diodes have been realised which operate continuously at room temperature. A threshold current of I/sub th/=1.2 mA has been measured for a R=4.75 /spl mu/m radius disk with lasing emission wavelength near /spl lambda/=1.0 /spl mu/m.