High power and high reliability InGaAs broad area lasers emitting between 910 and 980 nm

High power InGaAs multi-mode broad area semiconductor lasers emitting between 910 nm and 980 nm are required as optical pumps for Er/sup +/ and Yb/sup +/ doped double clad fiber lasers and amplifiers. Double clad fibers and amplifiers have found increasing commercial applications in both communication and industrial fields, where high power and high reliability are required. We developed two generations of devices to meet this need, which are discussed separately.