HIGH OUTPUT POWER LASER

摘要

A heterostructure injection laser is provided with very thin cladding or confinement layers adjacent each side of the active layer. The cladding layers are characterized with the wider bandgap while the active layer has the smallest bandgap and the highest index of refraction. The injected carriers are confined by the thin wide bandgap cladding layers on either side of the active layer while the optical wave is confined by thick intermediate index layers of the laser. This structure provides for overall low thermal resistance thereby allowing for higher output power with low beam divergence.