Abstract
The facet degradation of InGaAsP/InP double-heterostructure (DH) lasers was studied in water. It was found that the facet degradation of InGaAsP/InP DH lasers is caused by facet oxidation and that the oxidation rate is some orders of magnitude lower than that of GaAlAs DH lasers. Facet degradation is accelerated by the water temperature, while no optical power dependence was exhibited below 6.7 mW/μm2 in this study.
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