DFB AND DBR LASERS EMITTING AT 980 NM

The performance of DFB and DBR ridge waveguide lasers operating at 980 nm is reported. The DBR devices used a single growth step and gave si nglemode output powers as high as 30mW. The DFB devices used a two-ste p growth process in which the lower cladding and active regions were g rown first, the gratings were etched and then the upper cladding and p -contact layers were regrown on top of the grating. The DFB devices ga ve output powers as high as 75mW.