200 MeV proton damage effects on multi-quantum well GaAs/GaAlAs laser
diodes are studied. The threshold current damage factor can vary from
1.73 to 4.60x10(-15) cm(2)/p for different bias conditions and from 1.
52 to 3.58x10(-15) cm(2)/p for different incident directions. A simple
model, based on threshold current damage factor, is presented to quan
tify the degradation of optical power. Preliminary annealing effects a
re also presented. The annealing effects are greater for devices short
ed during irradiation than for those biased at I-bias=35mA.