Skip to Main Content
We investigate the effect of 2 MeV proton radiation on high-speed oxide-confined vertical cavity surface emitting lasers. Fluences in the range of φ=2.5×1012 p/cm2 to φ=5×1014 p/cm2 were studied and laser threshold current was found to degrade linearly with fluence according to a damage factor of KI=2.77×10-15cm2/p. Laser operating wavelength increased with fluence and experienced a maximum Δλ/λ of ∼0.71% at φ=5×1014 p/cm2. Leakage current also increases as a result of the proton irradiation. We propose a degradation model based on mobility reduction and carrier removal.