Effects of facet coatings on the degradation characteristics of GaAshyphen;Ga1minus;xAlxAs DH lasers

摘要

Facet damage which is one of the major mechanisms of slow degradation has been virtually eliminated with Al2O3facet coatings. Al2O3halfhyphen;wave films deposited by the conventional CVD method have been found to be effective not only for minimizing facet erosion but also for increasing the catastrophic failure limit by about a factor of 2.