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
D
and coupled by curved waveguide sections, data from four stripe geometries with
D
ranging from 10 μm to 27.4 μm are compared and overall optimal characteristics occur for
D = 10 \mu
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.