Abstract
An integrated manifold of quantum-well lasers with up to three quantum wells has been fabricated by metalorganic chemical vapor deposition. cw threshold current densities per well and differential quantum efficiencies are comparable to those for individual devices, and transverse far-field patterns are single lobed. Catastrophic optical damage levels increase with increasing quantum-well count and are substantially higher than those achieved with a single quantum-well laser. Thermal effects in cw operation have been mitigated by using an efficient design with a high characteristic temperature in a low thermal resistance configuration.
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