Experimental and analytic studies of coupled multiple stripe diode lasers

Experimental and analytic studies of coupled multiple stripe (CMS) phase-locked, room-temperature diode lasers are reported. Such devices generate high-power well-collimated beams, which potentially may be electronically scanned in the manner of phased array radar. For the tested devices with ten conducting 3 μm stripe contacts on centers separated by and coupled by curved waveguide sections, data from four stripe geometries with ranging from 10 μm to 27.4 μm are compared and overall optimal characteristics occur for m. In that case, threshold current densities are comparable to solid area lasers, differential quantum efficiency is approximately 60 percent, and maximum observed pulsed power per facet is on the order of 1 W.