Semiconductor laser array device

摘要

A semiconductor laser array device comprising an active waveguide extending from one light-emitting facet to the other light-emitting facet, wherein said active waveguide is composed of a single main portion extending in the oscillation direction from said one light-emitting facet and constituting a loss waveguide, and a plurality of parallel branching portions extending from the end of said main portion to said other light-emitting facet and constituting a real index waveguide.