Optically pumped GaInNAs-DFB lasers in the 1.1 /spl mu/m range grown by ECR-MBE

We report on the growth, fabrication and characterization of index coupled 1/sup st/ order DFB lasers on GaInNAs. A good quaternary GaInNAs layer quality could be achieved by using solid source molecular beam epitaxy and an electron cyclotron resonance source for nitrogen generation. GaInNAs QW's embedded in a waveguide laser structure were pumped optically. The evanescent field of the laser mode couples strongly to the effective refractive index modulation of a DFB grating on top of the ridge waveguide. Monomode emission peaks depending on the grating period are obtained at room temperature.