Degradation Characteristics and Mechanism of High Speed 850 nm Vertical-Cavity Surface-Emitting Laser during Accelerated Aging

The degradation process of Vertical-cavity Surface-emitting lasers with high speed and a central wavelength at 850 nm is investigated via constant-current accelerated aging experiments. Degradation the photoelectric performances under different operating conditions are characterized by optical output power, forward reverse bias current–voltage. 1/f noise characteristics formation mechanism discussed in terms experimental results low frequency below threshold current. main composition before after aging, current dependence origin analyzed emphatically. correlation between suggests that loss performance fluctuation characteristic can be attributed to contagion defects towards active region lasers. Furthermore, failure analysis confirmed conclusion occurred samples aging.