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 13

Plot of output power versus injection current for the designed 980 nm electrically pumped VCSEL showing a threshold current of 1.5 mA at room temperature (27°C). For an injection current value of 25 mA in the 980 nm VCSEL section 17 mw power is produced of which 8.5 mw will go to the top side which will cause optical pumping and the rest 8.5 mw of the 980 nm power will come out from the bottom.