Research Article

Integrated Duo Wavelength VCSEL Using an Electrically Pumped GaInAs/AlGaAs 980 nm Cavity at the Bottom and an Optically Pumped GaInAs/AlGaInAs 1550 nm Cavity on the Top

Figure 5

The structure of the designed top emitting 1550 nm VCSEL optically pumped using a 980 nm intracavity VCSEL, showing the materials used in the different layers. The 980 nm VCSEL is to be fabricated on a GaAs substrate and the 1550 nm VCSEL is to be grown on top of the 980 nm VCSEL.